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Questions (39)

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3	Show that $\operatorname{rank}(A)=\operatorname{rank}(B)$ [duplicate]
3	Let $f \colon \mathbb{R} \to \mathbb{R}$ be an infinitely differentiable function
3	Evaluate $\lim_\limits{n\to \infty} e^{-n}\sum_\limits{j=n}^{j=4n} \frac{n^j}{j!}$ [closed]
3	Prove that $B$ is non singular and that $AB^{-1}A=A$
2	Find the solutions to:$\frac{d^2y}{dx^2}=\left(\frac{dy}{dx}\right)^2$.

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Answers (12)

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1	How to show that $U_{2} $ is a uniform random variable?
1	Why is a term that comes out of a variance bracket is squared?
1	How was the area formula for a circle ($A = \pi r^2$) derived before the introduction of calculus?
1	Mathematical Statistics course
0	Independence between error and regressor

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58	Is there a step by step checklist to check if a multivariable limit exists and find its value?
50	Do matrices $ AB $ and $ BA $ have the same minimal and characteristic polynomials?
29	If two matrices have the same eigenvalues and eigenvectors are they equal?
21	For $\det(A)=0$, how do we know if $A$ has no solution or infinitely many solutions?
20	Proving ${\sum_{n=1}^\infty {1\over F_n}} <4$

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Votes cast (90)

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88	up		24	question
2	down		66	answer

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