lab bhattacharjee
Reputation
158,454
99/100 score
 May 1 revised Evaluate the $\lim_{x \to \ -\infty} (x + \sqrt{x^2 + 2x})$ added 69 characters in body Apr 30 revised Prove that $\int_{0}^{\frac{\pi}{2}}{\frac{\sin(2n+1)x}{\sin(x)}dx}=\frac{\pi}{2}$ for $n\ge0$ added 6 characters in body Apr 22 revised Wolfram answer is different for the integral $\sqrt{\frac{x}{2-x}}dx$ edited body Apr 17 revised If a chord joining the points $P(a\sec\alpha,a\tan\alpha)$ and $Q(a\sec\beta,a\tan\beta)$ on the hyperbola $x^2-y^2=a^2$ is a normal to it at $P$,then deleted 56 characters in body Apr 16 revised Factorial series with ratio test inconclusive edited body Apr 16 revised Factorial series with ratio test inconclusive deleted 2 characters in body Apr 16 revised Problem involving binomial coefficients where p+q=1 added 341 characters in body Apr 11 revised How do I show that $\frac a{1 - a^2} + \frac b{1 - b^2} + \frac c{1 - c^2} \ge \frac {3 \sqrt 3}2$ added 31 characters in body Apr 10 revised Multiplication of three primitive roots added 10 characters in body Apr 10 revised How do I show that $\frac a{1 - a^2} + \frac b{1 - b^2} + \frac c{1 - c^2} \ge \frac {3 \sqrt 3}2$ added 45 characters in body Apr 3 revised Find last two digits of $33^{100}$ added 2 characters in body Apr 2 revised Find last two digits of $33^{100}$ added 296 characters in body Apr 2 revised Series sum - where is the error? added 86 characters in body Mar 30 revised Summation $\frac{3}{1^2}+\frac{5}{1^2+2^2}+\frac{7}{1^2+2^2+3^2}+…$ added 46 characters in body Mar 29 revised Use an expression for $\frac{\sin(5\theta)}{\sin(\theta)}$ to find the roots of the equation $x^4-3x^2+1=0$ in trigonometric form added 360 characters in body Mar 27 revised Tricky Indefinite Integral deleted 3 characters in body Mar 27 revised Can you find a series whose sum is $… = (a) *\sqrt{\frac{1}{1-n}}$ added 40 characters in body Mar 26 revised Evaluate $\int_{0}^{\frac{\pi}{2}} \frac{1}{4\cos^{2}x + 9\sin^{2}x} dx$ added 18 characters in body Mar 25 revised Prove this integral problem added 1 character in body Mar 25 revised Prove: $\csc a +\cot a = \cot\frac{a}{2}$ added 114 characters in body