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Recent questions tagged engineering-mathematics

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212
Probability
Please anyone suggest in brief with his/her experience how to judge we need to solve the probability questions with which of the methods. 1.Bayes and total 2. Binomial, poison, exponential and uniform. Please suggest Thanks
Please anyone suggest in brief with his/her experience how to judge we need to solve the probability questions with which of the methods.1.Bayes and total2. Binomial, poi...
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213
#combinatorics
How many ways the letters of the word “AABCCD” can be arranged such that, these neither begin with ‘A’ nor end with D ?
How many ways the letters of the word “AABCCD” can be arranged such that, these neither begin with ‘A’ nor end with D ?
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214
MadeEasy Test Series 2019: Probability - Probability
Number of ways we can distribute 5 red balls , 5 white balls and 5 blue balls into 3 different boxes ?
Number of ways we can distribute 5 red balls , 5 white balls and 5 blue balls into 3 different boxes ?
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218
Doubt on syllabus
Are cosets, well ordered sets, total ordered sets in syllabus or GATE 2019?
Are cosets, well ordered sets, total ordered sets in syllabus or GATE 2019?
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219
Doubt on syllabus
Is LU decomposition in course for GATE 2019?
Is LU decomposition in course for GATE 2019?
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220
simple graph formula
why in this planar graph this theorem ,”sum of degrees of faces or regions is twice the number of edges” is not true as it should hold for all planar graphs?? Note: numbers denote region or face
why in this planar graph this theorem ,”sum of degrees of faces or regions is twice the number of edges” is not true as it should hold for all planar graphs??Note: nu...
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221
Determinant
True and false IF A is 5*5 matrix then det(4$A^{3}$)=$4^{5}det(A^{3}))$ det($(4A)^{3}$)=$det(4^{3}A^{3}))$ i think both are true ??
True and falseIF A is 5*5 matrix thendet(4$A^{3}$)=$4^{5}det(A^{3}))$det($(4A)^{3}$)=$det(4^{3}A^{3}))$i think both are true ??
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1 votes
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222
Eigen Values Doubt
Let there is a 2*2 Matrix and their eigen values are A and B. The eigen values of $(A+7I)^{-1}$ ?
Let there is a 2*2 Matrix and their eigen values are A and B. The eigen values of $(A+7I)^{-1}$ ?
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223
Self Made[Variation to Gate 2004 Ques]
Let X and Y be two exponentially distributed and independent random variables with mean α and β, respectively. If Z = MAX (X,Y), then the mean of Z is given by
Let X and Y be two exponentially distributed and independent random variables with mean α and β, respectively.If Z = MAX (X,Y), then the mean of Z is given by
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224
Random Variable
Let X and Y are two random variables with E(X)=10,E(Y)=20 and Var(X)=25,Var(Y)=36 and E(X.Y)=225. Now consider Z=aX-bY+1. Find a and b when E(Z)=1 and Var(Z)=1.
Let X and Y are two random variables with E(X)=10,E(Y)=20 and Var(X)=25,Var(Y)=36 and E(X.Y)=225.Now consider Z=aX-bY+1.Find a and b when E(Z)=1 and Var(Z)=1.
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226
Maths and Aptitude preparation strategy
Please suggest me how to do I start preparing for maths and aptitude as I'm already completing other subjects.(Any links or something which can be helpful) Suggestions will be very helpful. Thanks
Please suggest me how to do I start preparing for maths and aptitude as I'm already completing other subjects.(Any links or something which can be helpful)Suggestions wil...
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227
self doubt
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4 votes
2 answers
228
GATE Overflow | Mock GATE | Test 1 | Question: 5
A book contains $100$ pages. A page is chosen at random. What is the chance that the sum of the digits on the page is equal to $8$? $0.08$ $0.09$ $0.90$ $0.10$
A book contains $100$ pages. A page is chosen at random. What is the chance that the sum of the digits on the page is equal to $8$?$0.08$$0.09$$0.90$$0.10$
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4 votes
1 answer
231
GATE Overflow | Mock GATE | Test 1 | Question: 52
$\begin{bmatrix} 2 & 2 & 1 \\ 1 & 3 & 1 \\ 1 & 2 & 2 \end{bmatrix}$ For the above given matrix $A,$ $A^3 -7A^2 +10A = $ $5I+A$ $5I-A$ $A-5I$ $6I$
$\begin{bmatrix} 2 & 2 & 1 \\ 1 & 3 & 1 \\ 1 & 2 & 2 \end{bmatrix}$For the above given matrix $A,$$A^3 -7A^2 +10A = $$5I+A$$5I-A$$A-5I$$6I$
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233
Shortcut Method to find Maxima and Minima in Calculus
https://www.youtube.com/watch?v=tyiQLindzCE This is a great video but covers formula for cubic root what about for any given equation x^n,what would be the solution?
https://www.youtube.com/watch?v=tyiQLindzCEThis is a great video but covers formula for cubic root what about for any given equation x^n,what would be the solution?
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1 votes
1 answer
234
engineering maths
Let $A=\begin{bmatrix} 2\\-4 \\7 \end{bmatrix}.\begin{bmatrix} 1 &9 &5 \end{bmatrix}$ and $x,y$ and $z$ be the eigenvalue of $A$, then the value of $xyz$ is equal to?
Let $A=\begin{bmatrix} 2\\-4 \\7 \end{bmatrix}.\begin{bmatrix} 1 &9 &5 \end{bmatrix}$ and $x,y$ and $z$ be the eigenvalue of $A$, then the value of $xyz$ is eq...
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235
self doubt
How to solve these questions $(1)$ $I=\int_{0}^{1}(xlogx)^{4}dx$ $(2)$ $I=\frac{1}{\sqrt{2\pi}}\int_{0}^{\infty}e^{\frac{-x^{2}}{8}}dx$ $(3)$ $I=\int_{0}^{\infty}x^{\frac{1}{4}}.e^{-\sqrt{x}}dx$
How to solve these questions$(1)$ $I=\int_{0}^{1}(xlogx)^{4}dx$$(2)$ $I=\frac{1}{\sqrt{2\pi}}\int_{0}^{\infty}e^{\frac{-x^{2}}{8}}dx$$(3)$ $I=\int_{0}^{\infty}x^{\frac{...
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