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241/80 answers
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4h
revised Proving a trigonometric identity with tangents
deleted 3 characters in body; edited tags
15h
revised Solving $x^2=17\pmod{128}$
added 370 characters in body
Jun
27
revised Infimum taken over $\lambda$ in $\mathbb{C}$
added 12 characters in body
Jun
26
revised solving the equation by reducing it to quadratic form
added 36 characters in body
Jun
26
revised solving the equation by reducing it to quadratic form
added 42 characters in body
Jun
26
revised What is the solution of $2^{2^{2^2}}$?
deleted 16 characters in body
Jun
26
revised What are the last two digits of $77^{17}$?
added 1 character in body
Jun
24
revised Limit $(e^x+x)^{1/x}$, when $x\to 0$
added 161 characters in body
Jun
24
revised What are the last two digits of $77^{17}$?
edited body
Jun
24
revised Raising $2$ to the power of $2014^ {2013}$ modulo $41$
added 121 characters in body
Jun
22
revised Evaluation recursive limit
trigonometric functions should be uprighted.
Jun
22
revised Show that $\text{ord}_n (ab) \mid \text{ord}_n (a) \cdot \text{ord}_n (b)$ when $(a,n)=(b,n)=1$ and $(\text{ord}_n (a), \text{ord}_n (b)) = 1$.
added 31 characters in body
Jun
22
revised Show that $\text{ord}_n (ab) \mid \text{ord}_n (a) \cdot \text{ord}_n (b)$ when $(a,n)=(b,n)=1$ and $(\text{ord}_n (a), \text{ord}_n (b)) = 1$.
added 271 characters in body
Jun
22
revised Solving sum of $(-1)^n (1/2)^n$
added 242 characters in body
Jun
22
revised Value of $x$ in $\sin^{-1}(x)+\sin^{-1}(1-x)=\cos^{-1}(x)$
added 17 characters in body
Jun
21
revised Diophantine equations question
added 6 characters in body
Jun
19
revised Calculate $\sqrt{{{a+x^2}\over x} - 2\sqrt{a}} +\sqrt{{{a+x^2}\over x} + 2\sqrt{a}}$ if $a>0$ and $x>\sqrt{a}$
added 4 characters in body
Jun
19
revised Quick way to solve the system $\displaystyle \left( \frac{3}{2} \right)^{x-y} - \left( \frac{2}{3} \right)^{x-y} = \frac{65}{36}$, $xy-x+y=118$.
added 38 characters in body
Jun
18
revised How to solve this equation for $x$?$\left(\sqrt{2-\sqrt{3}}\right)^x + \left(\sqrt{2+\sqrt{3}}\right)^x = 2$
added 97 characters in body
Jun
18
revised Suppose $\lim _{ x\to 0 } \frac { a-\sqrt { { a }^{ 2 }-{ x }^{ 2 } }-{ x }^{ 2 }/4 }{ { x }^{ 4 } } $ is finite then how to find the value of a?
added 30 characters in body