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Mar
30
answered Convert a 2D point to 3D on a plane
Mar
10
answered Differentiate $\sqrt{1+f(x)^2}/(1+f(x))$
Dec
5
answered Complex roots forming a equilateral triangle
Dec
2
answered Minimum value of an integral with least square?
Nov
21
answered Proof of Faà di Bruno's formula using a convolution identity for Bell polynomials?
Nov
14
answered Fourier Series Transformation
Nov
13
answered Find the exact closed from expression of $1^2 + 3^2 + 5^2 + · · · + (2n + 1)^ 2$
Nov
13
answered Parameterizing an ellipse
Nov
10
asked Analysis of the function $\prod\limits_{n=-\infty}^{ \infty }(1-e^{-a{(x+n)^2} })$
Nov
4
asked To find the general formula of $\overbrace{g(g(g(…g(x))}^\text{n}=g_n(x)=\frac{A_{n}.x+B_{n}}{C_{n}.x+D_{n}}$
Oct
13
answered How to find sum of coefficients of $\frac{d^n}{dx^n} \left( Z(x)^m \right)$
Oct
10
asked How to find sum of coefficients of $\frac{d^n}{dx^n} \left( Z(x)^m \right)$
Aug
14
answered Simple geometry problem
Aug
12
answered How to show that a given line has a certain equation?
Aug
12
asked How to express $e^{yS^2}(f(x))$ in closed form where $\frac{d}{dx}=S$
Aug
6
answered Remove unlogical points (noise) in a curve
Aug
6
answered Find $\sum _{ n=-\infty }^{ \infty }{ \frac { 1 }{ { \left( j\omega +j\frac { 2\pi n }{ T } \right) }^{ 2 } } }$
Aug
6
answered Solve simple xor equation
Jul
31
asked To find the center of gravity of a homogeneous tetrahedron
Jul
26
answered How can I find the volume of prism: $V = \frac{(a + b + c)Q}{3} $