Jiew Meng
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### Questions (205)

 12 Resources/Books for Discrete Mathematics 11 Axiom of Regularity 11 Show $\frac{d}{dx} \tan^3{x}-3 \tan{x}+3x = 3 \tan^4{x}$ 8 Prove that if $2^n - 1$ is prime, then $n$ is prime for $n$ being a natural number 6 Evaluating $\sum_{n=0}^{\infty} \left(\frac{1}{2^{n-1}+1 }+ \frac{1}{2^n+1}\right)$

### Reputation (1,665)

 +10 Increasing precision of Octave +5 Differentiating Definite Integral +5 Axiom of Regularity +5 Verify for $f(x,y)$, homogeneous of degree $n$: $xf_x+yf_y=nf$

 1 How do I get $\int^\infty_{-\infty} ue^{-u^2/2} du = [-e^{-u^2/2}]$ 1 Differentiating Definite Integral 0 PDF (probability density function) of function of a random variable 0 Standard t-distribution on n-degrees of freedom: $T=\frac{X}{\sqrt{Y/n}}$, $S=Y$ how are these selected 0 How do I get $\mathbb{E}[h(X)g(Y)] = \mathbb{E}[\mathbb{E}[g(Y)\mid X]h(X)]$?

### Tags (61)

 2 integration × 42 0 trigonometry × 14 0 probability × 35 0 algebra-precalculus × 13 0 calculus × 23 0 vector-spaces × 10 0 limits × 18 0 complex-numbers × 8 0 sequences-and-series × 17 0 graphing-functions × 7

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