User StubbornAtom - Mathematics Meta Stack Exchange

StubbornAtom

Member for 6 years, 6 months
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Kolkata, India

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31

What is the most rigorous definition of a matrix?

24

When not to treat dy/dx as a fraction in single-variable calculus?

18

Distribution of $\frac{\sum_{i=1}^n X_iY_i}{\sum_{i=1}^n X_i^2}$ where $X_i,Y_i$s are i.i.d Normal variables

14

Evaluating $\int _{-100}^{100}\lfloor {x^3}\rfloor \,dx$

14

Constructing example showing $\mathbb{E}(X^{-1})=(\mathbb{E}(X))^{-1}$