TheJoker
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 Oct 13 answered number of integral solutions for $x^2+y^2=5^k$ Oct 11 comment Sets forming orthonormal basis but how can you ensure that it spans the vector space?? Oct 11 revised Probability mass function and conditional probabilities added 182 characters in body Oct 11 answered Sets forming orthonormal basis Oct 11 answered Probability mass function and conditional probabilities Oct 11 comment Probability mass function and conditional probabilities Just integrate the product w.r.t. $x$ to getthe answer. It is standard way to find marginal density from joint density. Oct 11 comment Probability mass function and conditional probabilities Also there is a typo by you, $p_X(x) \cdot p_{Y|X}(y|x)=p_{X,Y}(x,y)$ and not the way you wrote. Oct 11 comment Linear Algebra Vectors $2$ points are sufficient to determine a line. You've got two points. If both points satisfy both lines, it means the lines are same as there is a unique line passing through two distinct points. Oct 11 suggested rejected edit on Closed form for summation involving binomial coefficients. Oct 10 revised An angle $\theta$ can be trisected if and only if $4x^3-3x+\cos\theta$ is reducible over $\mathbb{Q}(\cos\theta)$ added 110 characters in body Oct 10 revised An angle $\theta$ can be trisected if and only if $4x^3-3x+\cos\theta$ is reducible over $\mathbb{Q}(\cos\theta)$ added 309 characters in body Oct 10 revised An angle $\theta$ can be trisected if and only if $4x^3-3x+\cos\theta$ is reducible over $\mathbb{Q}(\cos\theta)$ misinterpreted the question Oct 10 answered An angle $\theta$ can be trisected if and only if $4x^3-3x+\cos\theta$ is reducible over $\mathbb{Q}(\cos\theta)$ Oct 9 answered Distribution of Poisson variable conditional on a Gamma variable Oct 9 awarded Critic Oct 8 revised Where are we using $C^1$ in this proof? error, completely flawed argument. Oct 8 comment Where are we using $C^1$ in this proof? yes, sorry. I'll edit my post. Thanks. Oct 8 comment Where are we using $C^1$ in this proof? No I wrote, complex differentiability $\iff$ Cauchy Riemann. It is true. Complex differentiability does not imply analyticity. Also the function is right example. Consider $z$ tending to zero with $arg (z) = \frac {\pi}{4}$. Oct 8 answered Where did $\lambda$ come from? Oct 8 revised Where are we using $C^1$ in this proof? example supporting my statement