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Recent questions and answers in Engineering Mathematics
+1
vote
2
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1
Sheldon Ross
From 10 married couples, we want to select group of 6 that is not allowed to contain a married couple. How many choices are there?
answered
4 hours
ago
in
Combinatory
by
Yash Khanna
(
161
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47
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sheldonross
permutationsandcombinations
0
votes
0
answers
2
Self doubt generating function
Equation: x+y=10 and we are asked to find out the number of a nonnegative integral solution of this equation.
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4 hours
ago
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Combinatory
by
Lakshman Patel RJIT
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6.5k
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35
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generatingfunctions
+2
votes
1
answer
3
Propositional logic
Both are valid right?
answered
5 hours
ago
in
Mathematical Logic
by
Mk Utkarsh
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(
7k
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39
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propositionallogic
+3
votes
1
answer
4
GATE CE 2005 linear algebra
Consider the system of linear equations A(n*n)X(n*1) = λ(n*1) where λ is a scalar. Let (λi , Xi) be an eigen pair of an eigen value and its corresponding eigen vector for a real matrix A. Let I be a n*n unit matrix. Which one of the following ... A's inverse ) , then mod(λi)=1 for all i. (D) if (A's transpose = A) , then λi is real for all i
answered
14 hours
ago
in
Linear Algebra
by
Nairit
(
51
points)

204
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engineeringmathematics
eigenvalue
linearalgebra
gate2005
0
votes
0
answers
5
GATE98 ([CE])
Find the real symmetric matrix C corresponding to quadratic form Q =4X1X2  5X2X2. I am having a problem with this question because here the variables are like X1X2 and not simply X1 and X2. How to solve this type of problems?
asked
1 day
ago
in
Linear Algebra
by
Nairit
(
51
points)

12
views
engineeringmathematics
linearalgebra
+29
votes
8
answers
6
GATE20153_5
The number of 4 digit numbers having their digits in nondecreasing order (from left to right) constructed by using the digits belonging to the set {1, 2, 3} is ________.
answered
1 day
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Combinatory
by
Mk Utkarsh
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7k
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2.3k
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gate20153
permutationsandcombinations
normal
numericalanswers
+1
vote
2
answers
7
GATE 2018 Maths  29 (Chemical Engineering)
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1 day
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Linear Algebra
by
Nairit
(
51
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41
views
gate2018
engineeringmathematics
matrices
+1
vote
1
answer
8
Sheldon Ross
Prove $\binom{m+n}{r}$ = $\binom{n}{0}\binom{m}{r}+\binom{n}{1}\binom{m}{r1}+... +\binom{n}{r}\binom{m}{0}$
answered
1 day
ago
in
Combinatory
by
Neelay Upadhyaya
Junior
(
641
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40
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sheldonross
permutationsandcombinations
0
votes
1
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9
GATE 2018 Maths  43(Electrical Engineering)
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Calculus
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ankitgupta.1729
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39
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gate2018
engineeringmathematics
easy
0
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1
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10
GATE 2018 Maths  44(Electrical Engineering)
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Linear Algebra
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ankitgupta.1729
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66
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gate2018
engineeringmathematics
linearalgebra
easy
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1
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11
GATE 2018 Maths  18(Electrical Engineering)
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Calculus
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17
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gate2018
engineeringmathematics
calculus
integration
normal
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1
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12
GATE 2018 Maths  22(Electronics and Communication Engineering)
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Calculus
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ankitgupta.1729
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49
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gate2018
engineeringmathematics
linearalgebra
matrices
normal
0
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13
GATE 2018 Maths  23(Electronics and Communication Engineering)
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Probability
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6.5k
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54
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gate2018
engineeringmathematics
probability
normal
0
votes
1
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14
GATE 2018 Maths  11(Electrical Engineering)
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Calculus
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joshi_nitish
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gate2018
engineeringmathematics
calculus
continuity
differentiability
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15
GATE 2018 Maths  34(Electrical Engineering)
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Calculus
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Lakshman Patel RJIT
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21
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gate2018
engineeringmathematics
normal
0
votes
0
answers
16
Differentiation confusion
Please show the steps how to differentiate u function equation and obtain this answer after differentating .please tell totally confused.
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in
Calculus
by
LavTheRawkstar
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6.8k
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18
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engineeringmathematics
+11
votes
4
answers
17
GATE1993_8.2
The proposition $p \wedge (\sim p \vee q)$ is: a tautology logically equivalent to $p \wedge q$ logically equivalent to $p \vee q$ a contradiction none of the above
answered
2 days
ago
in
Mathematical Logic
by
Lakshman Patel RJIT
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6.5k
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525
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gate1993
mathematicallogic
easy
propositionallogic
+1
vote
1
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18
GATE 2018 Maths  33 (Chemical Engineering)
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Calculus
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Abhisek Tiwari 4
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695
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50
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gate
gate2018
engineeringmathematics
calculus
limits
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19
GATE 2018 Maths  6 (Chemical Engineering)
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reena_kandari
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gate
gate2018
engineeringmathematics
calculus
functions
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GATE 2018 Maths  54 (Chemical Engineering)
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Calculus
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Lakshman Patel RJIT
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49
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gate2018
complexnumber
+1
vote
1
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21
ISI2011A3b
The numbers 1, 2, . . . , 10 are arranged in a circle in some order. Show that it is always possible to find three adjacent numbers whose sum is at least 17, irrespective of the ordering.
answered
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in
Set Theory & Algebra
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Mk Utkarsh
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7k
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descriptive
isi2011
pigeonhole
+6
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5
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22
ISRO200733
Company X shipped 5 computer chips, 1 of which was defective. and company Y shipped 4 computer chips, 2 of which were defective. One computer chip is to be chosen uniformly at a random from the 9 chips shipped by the companies. If the chosen chip is found to be defective, what is the probability that the chip came from the company Y? 2/9 4/9 2/3 1/2
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Probability
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Tuhin Dutta
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7.8k
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isro2007
probability
conditionalprobability
0
votes
0
answers
23
Self Doubt
Q) What would be the execution order of the below statement? A⟹B⟹C
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4 days
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in
Mathematical Logic
by
Lakshman Patel RJIT
Boss
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6.5k
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39
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discretemathematics
+5
votes
3
answers
24
GATE201827
Let $N$ be the set of natural numbers. Consider the following sets, P: Set of Rational numbers (positive and negative) Q: Set of functions from {0,1} to $N$ R: Set of functions from $N$ to {0, 1} S: Set of finite subsets of $N$ Which of the above sets are countable? Q and S only P and S only P and R only P, Q and S only
answered
4 days
ago
in
Set Theory & Algebra
by
Neelay Upadhyaya
Junior
(
641
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1.2k
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gate2018
settheory&algebra
#countableset
normal
+16
votes
10
answers
25
GATE2014353
The CORRECT formula for the sentence, "not all Rainy days are Cold" is $\forall d (\text{Rainy}(d) \wedge \text{~Cold}(d))$ $\forall d ( \text{~Rainy}(d) \to \text{Cold}(d))$ $\exists d(\text{~Rainy}(d) \to \text{Cold}(d))$ $\exists d(\text{Rainy}(d) \wedge \text{~Cold}(d))$
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4 days
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in
Mathematical Logic
by
Lakshman Patel RJIT
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1.1k
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gate20143
mathematicallogic
easy
firstorderlogic
+13
votes
5
answers
26
GATE201411
Consider the statement "Not all that glitters is gold Predicate glitters$(x)$ is true if $x$ glitters and predicate gold$(x)$ is true if x is gold. Which one of the following logical formulae represents the above statement? $\forall x: glitters (x)\ ... x)$ $\exists x: gold(x)\wedge \neg glitters(x)$ $\exists x: glitters(x)\wedge \neg gold(x)$
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Mathematical Logic
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gate20141
mathematicallogic
firstorderlogic
+21
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5
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27
GATE2013_27
What is the logical translation of the following statement? "None of my friends are perfect." (A) $∃x(F (x)∧ ¬P(x))$ (B) $∃ x(¬ F (x)∧ P(x))$ (C)$ ∃x(¬F (x)∧¬P(x))$ (D)$ ¬∃ x(F (x)∧ P(x))$
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Mathematical Logic
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Lakshman Patel RJIT
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6.5k
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1.8k
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gate2013
mathematicallogic
easy
firstorderlogic
+13
votes
3
answers
28
GATE2012_13
What is the correct translation of the following statement into mathematical logic? “Some real numbers are rational” (A) $\exists x (real(x) \lor rational(x))$ (B) $\forall x (real(x) \to rational(x))$ (C) $\exists x (real(x) \wedge rational(x))$ (D) $\exists x (rational(x) \to real(x))$
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4 days
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in
Mathematical Logic
by
Lakshman Patel RJIT
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6.5k
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845
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gate2012
mathematicallogic
easy
firstorderlogic
+14
votes
5
answers
29
GATE200926
Consider the following wellformed formulae: $\neg \forall x(P(x))$ $\neg \exists x(P(x))$ $\neg \exists x(\neg P(x))$ $\exists x(\neg P(x))$ Which of the above are equivalent? I and III I and IV II and III II and IV
answered
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ago
in
Mathematical Logic
by
Lakshman Patel RJIT
Boss
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6.5k
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651
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gate2009
mathematicallogic
normal
firstorderlogic
+17
votes
4
answers
30
GATE200923
Which one of the following is the most appropriate logical formula to represent the statement? "Gold and silver ornaments are precious". The following notations are used: $G(x): x$ is a gold ornament $S(x): x$ is a silver ornament $P(x): x$ is precious $\forall x(P(x ... (G(x) \wedge S(x)) \implies P(x))$ $\forall x((G(x) \vee S(x)) \implies P(x))$
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in
Mathematical Logic
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Lakshman Patel RJIT
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976
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gate2009
mathematicallogic
easy
firstorderlogic
0
votes
0
answers
31
Sheldon Ross
Determine the number of vectors ($x_{1}...x_{n}$}, such that each x$_{i}$ is either 0 or 1 and $\sum_{i=1}^{n}x_{i}\geq k$
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4 days
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in
Combinatory
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Tesla!
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45
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sheldonross
permutationsandcombinations
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1
answer
32
Probability
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Probability
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Anish Dahiya
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33
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engineeringmathematics
probability
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votes
1
answer
33
Total probability and Baye's theorem
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Probability
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Anish Dahiya
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17
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54
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probability
engineeringmathematics
bayestheorem
0
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1
answer
34
NIELIT ScientistB Dec 2017_24
Using bisection method, one root of X4X1 lies between 1 and 2. After second iteration the root may lie in interval : (A) (1.25, 1.5) (B) (1, 1.25) (C) (1, 1.5) (D) None of the options
answered
5 days
ago
in
Set Theory & Algebra
by
Manohar Kumar Sing 1
(
13
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100
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0
votes
1
answer
35
Rosen Example 27
Q)Consider these statements, of which the first three are and fourth is a valid conclusion. "All hummingbirds are richly colored." "No large birds live on honey." "Birds that do not live on honey are dull in color" "Hummingbirds are small." Express using quantifiers??
answered
5 days
ago
in
Mathematical Logic
by
Mamta Satywali
Junior
(
631
points)

34
views
predicatelogic
kennethrosen
+1
vote
1
answer
36
Distributed Lattice
Is the following lattice distributed ?
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in
Set Theory & Algebra
by
Mk Utkarsh
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7k
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118
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lattice
settheory&algebra
0
votes
0
answers
37
Rosen Example 25
Q) Use predicates and quantifiers to express the system specification "Every mail message larger than one megabyte will be compressed" and "If a user is active, at least one network link will be available."
[closed]
asked
5 days
ago
in
Mathematical Logic
by
Lakshman Patel RJIT
Boss
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6.5k
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38
views
kennethrosen
predicatelogic
0
votes
1
answer
38
isro exam december 2017
The number of elements in the power set of {{1,2},{2,1,1},{2,1,1,2}} is:
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saket nandan
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isro2017
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1
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39
JEST Exam
Two gamblers have an argument. The first one claims that if a fair coin is tossed repeatedly, getting two consecutive heads is very unlikely. The second, naturally, is denying this.They decide to settle this by an actual trial; if within n coin ... . What happens for larger values of n? Is it true that P(n) only increases with n? Justify your answer.
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Probability
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Tesla!
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58
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jest
0
votes
1
answer
40
gatebook
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Linear Algebra
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Kaifi7
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707
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124
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testseries
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@raviyogi Do you know what was the cutoff ot IIT ...
I think the exam has not yet been created.
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