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Mar
6
reviewed Approve Proving $\lim_{x\to 0} \sin x = 0$ and finding solutions to $\frac{1-x}{1-x^2}\leq \frac{1}{x}$
Sep
28
reviewed Edit Are there any nonzero integers $a$ , $b$ such that $a^2$ = $3b^2$
May
17
reviewed Reject Proof of this inequality
Dec
7
reviewed Approve How can I solve $\frac{2x}{\sqrt{1-x^2}}=0$
Apr
7
reviewed Approve Is this sum equal to 1?
Feb
11
reviewed Approve The prime numbers that divide $10^4-1$
Feb
3
reviewed Approve Compute $\sum_{k=1}^{n} \frac 1 {k(k + 1)} $
Feb
2
reviewed Excellent Uniformization Theorem for compact surface
Feb
2
reviewed Excellent Limit Computation of $(e^x+x)^{1/x}$ as $x$ approaches zero
Feb
2
reviewed Needs Improvement Logic about systems?
Feb
2
reviewed Excellent Find the coordinates of a point on a circle
Feb
2
reviewed Excellent A question on complex numbers
Jan
26
reviewed Edit If $g(x) = \dfrac{2x}{x+1}$, find $\dfrac{g(x+h)-g(x)}{h}$
Jan
26
reviewed Reviewed Is the following a Wiener process?
Jan
19
reviewed Approve Prove that $x-\mid y\mid\le\left|\frac{x-y}{1-xy}\right|<1$
Jan
7
reviewed Approve Prove that $x = 2$ is the unique solution to $3^x + 4^x = 5^x$ where $x \in \mathbb{R}$
Sep
23
reviewed Reviewed Reference for a derivative formula for matrices
Sep
23
reviewed Reviewed Detect when a point belongs to a bounding box with distances
Sep
23
reviewed Reviewed Five balls in a scale
Sep
23
reviewed Reviewed 2nd Order Elliptic PDEs with functional BCs