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Apr
17
comment How do I integrate this expression?
@Vizuna, Differentiate both sides wrt $x$
Apr
17
answered Solving trigonometric expressions in $x$
Apr
17
answered How do I integrate this expression?
Apr
17
answered system of conguences
Apr
16
comment Minimum value of function $f(x)=x+\log_2(2^{x+2}-5+2^{-x+2})$ out of 5 options
@JohnDoe, You can take out $4$ as common factor
Apr
16
answered Find $\lim\limits_{x \to 0} \frac{(1+3x)^{1/3}-\sin(x)-1}{1-\cos(x)}$
Apr
16
comment Minimum value of function $f(x)=x+\log_2(2^{x+2}-5+2^{-x+2})$ out of 5 options
@JohnDoe, Wanted to make a polynomial of $2^x$
Apr
16
answered Minimum value of function $f(x)=x+\log_2(2^{x+2}-5+2^{-x+2})$ out of 5 options
Apr
16
comment Solve $ \left(\sqrt[3]{4-\sqrt{15}}\right)^x+\left(\sqrt[3]{4+\sqrt{15}}\right)^x=8 $
Distant relative : math.stackexchange.com/questions/384090/…
Apr
16
answered Limit of a set of fractions
Apr
16
comment Let a be a positive number. Then $\lim_{n \to \infty}[\frac{1}{a+n}+\frac{1}{2a+n}+\cdots +\frac{1}{na+n}]$
Related: math.stackexchange.com/questions/469885/…
Apr
15
comment Evaluating: $I_1 = \sin^{-1} \left(\sqrt{\frac{x}{x+a}}\;\right) $
See math.stackexchange.com/questions/1229909/…
Apr
15
comment Calculate isocele triangle dimensions from angles
@Neovea, Which height, presumably from the base, right? Then can you use my hint?
Apr
15
comment Calculate isocele triangle dimensions from angles
Draw a perpendicular to the base which will be bisected by the perpendicular
Apr
15
comment Number of solutions of the congruence $x^p \equiv x\pmod p$
See math453fall2008.wikidot.com/lecture-23
Apr
15
comment to find the value of angle A in the given equation
@TheViper, $$2\cos A+1=0\iff\cos A=-\dfrac12=\cos ?$$
Apr
15
answered to find the value of angle A in the given equation
Apr
15
comment How to sum $\sum_{k=1}^n (k+1)(k)(k-1)$
@Jean-ClaudeArbaut, Sorry for some reason, that eluded me. Please find the updated version.
Apr
15
revised How to sum $\sum_{k=1}^n (k+1)(k)(k-1)$
added 317 characters in body
Apr
15
answered How to sum $\sum_{k=1}^n (k+1)(k)(k-1)$