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Aug
22
revised How to find $k$ such that the equation possesses only one real root?
added 2 characters in body
Aug
22
revised Is there a proven formula for Pisano periods (Fibonacci numbers taken modulo $n$)?
edited body; edited title
Aug
22
revised The total number of $n$-variable of boolean functions which are symmetric and self-dual? (For an add integer $n$)
added 4 characters in body; edited title
Jul
23
reviewed Approve Is this inequality true? If yes, for what functions?
Jul
21
revised $\Re(e^{-j\theta}A)-\Re(e^{-j\theta}B)\gt0 \Leftrightarrow cos(\theta-\angle(A-B))\gt0$
added 3 characters in body; edited title
Jul
3
revised Proof to show that sums of vectors spanning a vector space also span a vector space
added 2 characters in body; edited title
Jul
1
revised Prove that $f'(c ) = \lambda f(c )$
added 4 characters in body
Jul
1
revised Prove that for all $x$, $y$ in $\mathbb{R}$ there exist $z$, $g$ such that $x = z + g$, $y = z - g$
deleted 2 characters in body; edited title
Jul
1
revised prove that this number contains two equal digits
edited title
Jul
1
revised Differentiate the Function: $ f(x)= x\ln x\ - x $
deleted 13 characters in body; edited title
Jun
24
revised How to calculate the limit: $\lim _{ x\to1 } \frac { nx^{ n+1 }-(n+1)x^{ n }+1 }{ (e^{ x }-e)\sin(\pi x) } $
edited title
Jun
21
revised How to find the curl, divergence, gradient and laplacian of functions without calculating the individual indices
added 12 characters in body
Jun
21
revised If real numbers $x$ and $y$ satisfy the equation $\frac {2x+i}{y+i}= \frac {1+i\sin{\alpha}}{1-i\sin{3\alpha}}$ then quotient $\frac xy$ is equal to?
edited title
Jun
21
comment what are the general form of eigenvalues of an orthogonal matrix
But for real eigenvalues, the theorem of the question is true.
Jun
21
comment what are the general form of eigenvalues of an orthogonal matrix
$\bar\lambda$ is eigenvalue of the conjugate transpose of $A$.
Jun
21
revised Trouble differentiating $\int_1^{x^3}\arcsin(t)dt$
added 9 characters in body
Jun
21
comment About the roots of the derivative of a polynomial.
@PVanchinathan: $a$ and $b$ cannot be anything, should be chosen so that the semi-plane contains all roots of the polynomial.
Jun
14
revised How to calculate $\int_{-\infty}^{\infty} x^2 \cos(ax)e^{-x^2}dx$ using Cauchy's theorem
added 3 characters in body; edited title
Jun
14
revised For compact $A$, $\inf\{\varrho(y,x) : y \in A\}=\varrho(a,x)$
deleted 11 characters in body
Jun
14
revised For compact $A$, $\inf\{\varrho(y,x) : y \in A\}=\varrho(a,x)$
deleted 19 characters in body; edited title