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Don't have much time these days...


Apr
12
answered Find this $a,b,c$ such that $\sqrt{9-8\sin 50^{\circ}}=a+b\sin c^{\circ}$
Apr
11
answered Find the limit of the following using the definition if possible
Apr
11
answered Can we prove that we can “sieve” numbers in this way?
Apr
11
answered Showing $\{x\} + \{\frac{1}{x}\} \lt 1.5$ and other problems.
Apr
11
answered Ways to fill a $n\times n$ square with $1\times 1$ squares and $1\times 2$ rectangles
Apr
11
answered Does the following series converge?
Apr
11
answered How to solve $(1+x)^{y+1}=(1-x)^{y-1}$ for $x$?
Apr
11
answered Find this $\frac{1}{2m+1}+\frac{1}{2n+1}=\frac{2}{2k+1}$
Apr
11
answered Solving $(f'(x))^2 = f(x)f''(x)$ with boundary conditions.
Apr
11
answered Evaluating $\lim \limits_{n\to \infty}\,\,\, n\!\! \int\limits_{0}^{\pi/2}\!\! \left(1-\sqrt [n]{\sin x} \right)\,\mathrm dx$
Apr
11
answered Simplifying $\sum\limits_{k=1}^{n-1} (2k + \log_2(k) - 1)$
Apr
11
answered Solving the improper integral $\int_0^{\infty}\frac{dx}{1+x^3}$
Apr
11
answered Proof of Existence of a (Planar) Triangle Given Three Sides
Apr
10
answered Tangent with $2$ circles
Apr
10
answered Combinatorial way of managing a store's cashier
Apr
9
answered Logarithm calculation result
Apr
9
answered Showing $\log(2)$ and $\log(5)$
Apr
9
answered Functional equations and generating functions
Apr
9
answered How to prove ${{a}^{a}}{{b}^{b}}\ge {{\left(\frac{a+b}{2}\right)}^{a+b}}$ ?thanks.
Apr
9
answered Proving factorial attribute