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 May10 reviewed Approve Determine all natural numbers n and m that satisfying in this equation. May10 reviewed No Action Needed Proof of Cauchy Riemann Equations in Polar Coordinates Apr25 reviewed Reject To prove ($A\cup B$) $\cap C$ = $(A \cup C) \cap (B \cup C)$ Apr25 reviewed Reopen Difficult Complex Number Proof. Given $|w| =1$ or $|v|=1$ Apr24 reviewed Reopen Simplifying $\frac{\log(x)}{x}=y$. Apr24 reviewed Approve Why can't we differentiate one variable with respect to another variable? Apr23 reviewed Close Expected value of key presses Apr23 reviewed Leave Open Examples of modules such that $M\oplus N_1\simeq M\oplus N_2$, but $N_1\not\simeq N_2$? Apr23 reviewed Edit Can someone help me with this limits problem Apr23 reviewed Leave Open Finding the vector perpendicular to the plane Apr23 reviewed Looks OK Interpretation of a combinatorial identity Apr23 reviewed Leave Closed How can I prove this combinatorial identity? Apr16 reviewed Reopen Circle sandwiched between two squares problem Apr16 reviewed Reopen Edited-How can I solve polynomial recurrences like $f(n+1)=\frac{2f(n)}{f(n)+1}$ Apr16 reviewed No Action Needed Limits of coefficeints in a system of O.D.E.s. Apr16 reviewed Reviewed How to get the projection matrix from coordinate/transformation? Apr15 reviewed Approve Stirling Formula Apr15 reviewed Reviewed How to determine number of roots of $a^k + b^k \equiv c^k \pmod{d}$? Apr15 reviewed Close How to prove that $\text{Aut}(\mathbb{Z}/p \times \cdots \times \mathbb{Z}/p )\simeq GL_n(\mathbb{Z}/p)$ Apr15 reviewed Leave Open Number Theory - Order of $p^2$