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Recent questions in Engineering Mathematics

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#Made Easy
Find the value of $\lim_{x \rightarrow 0 } \dfrac{x \tan2x - 2x\tan x}{(1-\cos 2x)^2} \rule{1 in}{.5 pt}.$

Dknights asked in Calculus 23 hours ago

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2

What is the magnitude of Adj(A) and Adj(Adj(A)) ?
What is the magnitude of Adj(A) and Adj(Adj(A)) ?

h4kr asked in Set Theory & Algebra 3 days ago

by h4kr

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3

TestBook graph theory question
If G is a simple planar connected graph with 5 vertices, how many edges in maximum can be there in the given graph?

Sahil_Lather asked in Graph Theory 4 days ago

by Sahil_Lather

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4

TestBook graph theory questions
Let Gn be the complete bipartite graph K13, 17 then the chromatic number of G̅n is _____ (G̅n is complement of Gn and n = 30) A 13 B 17 C n(n−1)2−13×17 D n(n−1)2−2

Sahil_Lather asked in Graph Theory 4 days ago

by Sahil_Lather

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5

Testbook poset question
Which of the following is/are correct about the number of edges and number of vertices respectively in the Hasse diagram of POSET [P(A); ⊆] where P(A) is the power set and A = {a , b , c} ? 1 number of vertices = 12 2 number of vertices = 8 3 number of edges = 12 4 number of edges = 8

Sahil_Lather asked in Set Theory & Algebra 4 days ago

by Sahil_Lather

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TestBook Lattice question
Consider the relation R = {(p, p), (p, q), (p, r), (p, s), (p, t), (q, q,) (q, s), (q, t), (s, s), (s, t), (r, r), (r, t), (t ,t) which is a subset of A × A where A = {p, q, r, s, t} then which of the following is/are true? 1 (A, R) is a Boolean Algebra 2 (A, R) is a complemented lattice 3 (A, R) is distributed lattice 4 (A, R) is not a lattice

Sahil_Lather asked in Set Theory & Algebra 4 days ago

by Sahil_Lather

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7

Testbook set theory question for abelian group and generators
Given: Statement A: All cyclic groups are an abelian group. Statement B: The order of the cyclic group is the same as the order of its generator. 1 A and B are false 2 A is true, B is false 3 B is true, A is false 4 A and B both are true

Sahil_Lather asked in Set Theory & Algebra 4 days ago

by Sahil_Lather

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8

TestBook Hasse Diagram question to find GLB
If [P(A); ⊆] is a lattice where A = {x, y} and P(A) is the power set then what is the sum of element in Greatest Lower Bound (GLB) set of given lattice? x + y x y 0

Sahil_Lather asked in Graph Theory 4 days ago

by Sahil_Lather

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9

Testbook group theory question
Let G be a group of order 49. Then G is abelian G is cyclic G is non-abelian Centre of G has order 7

Sahil_Lather asked in Set Theory & Algebra 4 days ago

by Sahil_Lather

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10

Testbook Relations in discrete maths
Which of the following statement is not true? 1 If a relation on a set A is symmetric and transitive then R is reflexive. 2 If a relation R on a set A is irreflexive and transitive then R is antisymmetric. 3 If R is antisymmetric relation then R ꓵ S ... If R and S are transitive relation on a set A then R U S need not be transitive and R ꓵ S are also transitive.

Sahil_Lather asked in Mathematical Logic 4 days ago

by Sahil_Lather

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11

DRDO CSE 2022 Paper 1 | Question: 5 (b)
Consider rolling of a dice experiment. Let $\text{A}$ be the event of getting an even number and $\mathrm{B}$ be the event of getting a prime number. Write the sets representing the following events. $\mathrm{A}$ and $\mathrm{B}$

admin asked in Probability 5 days ago

by admin

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DRDO CSE 2022 Paper 1 | Question: 5 (c)
Consider rolling of a dice experiment. Let $\text{A}$ be the event of getting an even number and $\mathrm{B}$ be the event of getting a prime number. Write the sets representing the following events. not $\text{B}$

admin asked in Probability 5 days ago

by admin

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13

Kenneth Rosen Edition 7 Exercise 1.3 Question 57 (Page No. 36)
The following sentence is taken from the specification of a telephone system: If the directory database is opened,then the monitor is put in a closed state, if the system is not in its initial ... statements. Find an equivalent, easier to understand specification that involves disjunctions and negations but not conditional statements.

pavan singh asked in Mathematical Logic 6 days ago

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14

#predicate-logic
Why "Birds can't fly" and "Every bird can't fly" are not same?

pavan singh asked in Mathematical Logic Jan 25

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15

Made Easy Test Series
p ->(q->r). Could you please tell me how it is a tautology?

Hrithik Vashishtha asked in Mathematical Logic Jan 24

by Hrithik Vashishtha

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1 answer

16

Practice problem on Translations
Given a statement: "At least 1 pigeon-hole has at least 2 pigeons in it". and functions: ph(x) : x is pigeon-hole p(x) : x is pigeon h(x,y) : x has y Answer the following questions: Translate the given statement into logical ... What would be negation of the logical expression we get in part (a). Translate logical expression we get in part (b) to english.

Roshakaw asked in Mathematical Logic Jan 23

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17

Kenneth Rosen Edition 7 Exercise 1.3 Question 36 (Page No. 35)
When does s∗ = s, where s is a compound proposition?

pavan singh asked in Mathematical Logic Jan 22

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Kenneth Rosen Edition 7 Exercise 1.3 Question 13 (Page No. 35)
Use truth tables to verify the absorption laws. a) p ∨ (p ∧ q) ≡ p b) p ∧ (p ∨ q) ≡ p

pavan singh asked in Mathematical Logic Jan 21

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19

Kenneth Rosen Edition 7 Exercise 1.3 Question 12 (Page No. 35)
Show that each conditional statement in Exercise 10 is a tautology without using truth tables.

pavan singh asked in Mathematical Logic Jan 21

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20

Kenneth Rosen Edition 7 Exercise 1.3 Question 11 (Page No. 35)
Show that each conditional statement in Exercise 9 is a tautology without using truth tables.

pavan singh asked in Mathematical Logic Jan 21

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Recent questions in Engineering Mathematics