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cjferes
  • Member for 10 years, 8 months
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8 votes

Which one is true? (CSIR)

8 votes
Accepted

What is this representation of complex numbers?

6 votes

What is the expectation of norm of $[X_1,\ldots, X_n]$ where $X_i$ are indpendent complex Gaussian random variables

6 votes
Accepted

Express AND in terms of OR, XOR, NOT

5 votes

If $\sin( 2 \theta) = \cos( 3)$ and $\theta \leq 90°$, find $\theta$

5 votes
Accepted

If $CD = -DC$ Show that either $C$ or $D$ has no inverse.

4 votes
Accepted

Find a path of a particle

4 votes
Accepted

Expected Euclidean distance between a given point and a multivariate Gaussian variable

3 votes

Computing the Autocorrelation function of a WSS process with H(w)=iw

3 votes
Accepted

Procedure to generate an inverse for a non-square matrix

3 votes
Accepted

How to solve: $\frac{x}{\log_2(x) }= y$

3 votes

Can someone help me to find a counter example that shows that $a \equiv b \mod m$ does not imply $(a+b)^m \equiv a^m +b^m \mod m$

3 votes

Prove by Induction $64\mid (7^{2n} + 16n − 1)$

3 votes

In any triangle ABC, the expression $(a + b + c) (a + b - c) (b + c - a) (c + a - b)$ is equal to

3 votes

Horse betting arbitrage

3 votes
Accepted

Using integral estimation to show that $ \sum_{k=1}^{\infty} \frac {\ln k}{k^2} \le \frac {2+3\ln2}{4}$

3 votes

Derivative of a time derivative

3 votes

Explanation of line element formula $dl^2 = dx^2 + dy^2$

3 votes
Accepted

Is this Differential equation a linear DE?

2 votes

Line integral using Green's theorem.

2 votes

System of equations in Lagrange multiplier problem

2 votes
Accepted

how to solve two's complement question?

2 votes
Accepted

Interval of convergence using ratio test on the series $\ln(1 - x)$

2 votes
Accepted

inequality with absolute value?

2 votes

What is the sum of $\sum_{n=1}^\infty (n^2+n^3)x^{n-1}$?

2 votes

Acceleration to speed at specific distance and time

2 votes

Derivative help

2 votes

Getting wrong answer trying to evaluate $\int \frac {\sin(2x)dx}{(1+\cos(2x))^2}$

2 votes
Accepted

Multivariable Chain Rule for two variables

2 votes

Find the equation of a curve where $\frac{dy}{dx}=2x+y$ at all points