117,535 reputation
1093170
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location Kolkata, India
age
visits member for 2 years, 7 months
seen 3 hours ago

4h
revised Trig substitution fails for evaluating $ \int \frac{\cos x \sin x}{\sin^2{x} + \sin x + 1} dx$?
added 31 characters in body
11h
revised Existence of solution to Congruence relation $(x^2-2)(x^2-6)(x^2-3) \equiv 0\pmod p$
added 409 characters in body
1d
revised existence of solution to congruence $x^4 \equiv -4 \pmod p$
added 11 characters in body
1d
revised What is the integral of $\frac{\sqrt{x^2 +4}}{x}dx$
added 93 characters in body
2d
revised Finding an Expression for the Difference of Roots of the Quadratic Equation
added 262 characters in body
Jan
27
revised how old are Inee and Imee now?
added 55 characters in body
Jan
27
revised Imaginary part of $ln(\sqrt{i})?$
added 25 characters in body
Jan
27
revised Finding the limit of the following expression
added 220 characters in body
Jan
25
revised Last 2 digits of $2345^{369}$
added 377 characters in body
Jan
25
revised Last 2 digits of $2345^{369}$
added 213 characters in body
Jan
24
revised Help with Conic: Hyperbola's chord of contact
added 197 characters in body
Jan
24
revised Divisibility of binomial coefficients
added 1 character in body
Jan
23
revised sum of a given power series
deleted 2 characters in body
Jan
23
revised We write all the positive integers run together as follows: $123456789101112131415 . . .$
added 183 characters in body
Jan
23
revised Evaluate $\sum\limits_{k=1}^{\infty} \frac{k^2-1}{k^4+k^2+1}$
added 16 characters in body
Jan
23
revised How do I find this limit as n goes to infinity $(1 - \frac {1}{3} ) (1 - \frac {1}{6} ) (1 - \frac {1}{10} )$ … $(1 - \frac {1}{n ( n+1) /2} )$
added 24 characters in body
Jan
20
revised Limit $\lim _{ \theta \to 0 }{ \frac { cos2\theta -cos\theta }{ \theta } } $
added 16 characters in body
Jan
19
revised Confusion with Complex Equations
edited body
Jan
19
revised Find the sum of the following series: $\sum_{n=1}^{\infty}\frac{n \cdot 2^n}{(n+2)!}=?$
added 39 characters in body
Jan
19
revised Why $\lim_{x\to -\infty} \frac{x^3}{\sqrt{x^6+4}} =-1 $ and not $1$?
added 60 characters in body