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Apr
16
comment Using hensel's lemma
Proof : math453spring2009.wikidot.com/hensel-s-lemma
Apr
16
answered Proving a trigonometric identity:
Apr
16
revised Factorial series with ratio test inconclusive
edited body
Apr
16
comment Factorial series with ratio test inconclusive
@Vitto, Thanks for yours observation. Rectified the typo.
Apr
16
revised Factorial series with ratio test inconclusive
deleted 2 characters in body
Apr
16
answered Factorial series with ratio test inconclusive
Apr
16
answered Should I use L'Hôpital
Apr
16
comment Problem involving binomial coefficients where p+q=1
@KaranSingh, Please find the updated answer
Apr
16
revised Problem involving binomial coefficients where p+q=1
added 341 characters in body
Apr
16
answered Problem involving binomial coefficients where p+q=1
Apr
16
answered Evaluation of $\int_{0}^{\frac{1}{2}}\frac{\ln(1-x)}{2x^2-2x+1}dx$
Apr
15
comment Determination of $(a,b)$ in Definite Integral.
Clearly $a=1$ is a solution. But not sure about the uniqueness
Apr
15
answered Evaluate the following integral
Apr
15
answered value of $\tan(A)$
Apr
15
comment Doubt in solving $\sec^{-1}\sqrt{5}+\csc^{-1}\frac{\sqrt{10}}{3}+\cot^{-1}\frac{1}{x}=\pi$
@Umeshshankar, Yes, then you need to deal with one Trigonometric ratio. Else you need to use math.stackexchange.com/questions/672575/…
Apr
15
answered Doubt in solving $\sec^{-1}\sqrt{5}+\csc^{-1}\frac{\sqrt{10}}{3}+\cot^{-1}\frac{1}{x}=\pi$
Apr
15
comment Determination of $(a,b)$ in Definite Integral.
What is the source of the nice problem?
Apr
14
answered Why does this limit of hyperbolic cosines equate to a parabola?
Apr
14
comment Show that if $\frac{a}{b} < \frac{c}{d}$, then $\frac{a}{b} < \frac{a+c}{b+d} < \frac{c}{d}$
Find $$\dfrac{a+b}{c+d}-\dfrac ab$$ and $$\dfrac cd-\dfrac{a+b}{c+d}$$
Apr
14
comment How to rigourously prove that any integer divisible by $3$ can be written as a sum of four cubes?
What is the source of the problem? See also: math.stackexchange.com/questions/430910/…