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1h
reviewed Approve $F$ is subfield of complex field $\mathbb{C}$. Show that $F$ is field with characteristic $0$
1h
reviewed Approve Show there's an analytic functions satisfying certain conditions
3h
reviewed Reject Prove a function's injectivity and surjectivity
3h
reviewed Approve limit of sum $\dfrac{(-1)^{n-1}}{2^{2n-1}}$
4h
reviewed Reject Having trouble solving a problem involving hyperbolic trignometric functions
8h
reviewed Approve Bungy Jump Model
15h
reviewed Approve Finding eigenvalues from characteristic polynomial
1d
reviewed Reject Complexity of irrational numbers
1d
reviewed Reject Limit of a partial sum
1d
reviewed Reject Show that $f(n)$ is $O(g(n))$ then $f(n)+c$ is $O(g(n))$
1d
reviewed Approve What is the probability of drawing 3 balls such that none of them is red?
1d
reviewed Reject Why does $\lim_{x\to 0} \frac {\sin (xy)}{x} \to y $?
1d
reviewed Approve How can I parametrize $|x|+|y|=1$
1d
reviewed Approve A way to calculate e?
1d
reviewed Approve the double angle identities-sin2A
1d
reviewed Approve How to show that $f(x,y,z) = (1-x^{2})^{2}+z^{2}+y^{2}+yz$ is a convex function on $S =\{(x,y,z) \in \mathbb{R}^3|\frac{1}{\sqrt 3} < x\}$?
1d
reviewed Approve Find the limit of the sequence $(4^n)/((2n)!)$
1d
reviewed Reject Proof of $(A\cup B)-(A\cap B)=(A-B)\cup(B-A)$
1d
reviewed Approve Tweaking function to reduce the rate of decay of a logarithmic based curve
1d
reviewed Reject Solving Trigonometric Equations?