112,684 reputation
991169
bio website
location Kolkata, India
age
visits member for 2 years, 6 months
seen 2 hours ago

Jul
15
awarded  Enlightened
Jul
14
comment What do you call this arithmetical property and how do you prove it?
@David, proofwiki.org/wiki/Exponent_Combination_Laws/Power_of_Power
Jul
14
answered What do you call this arithmetical property and how do you prove it?
Jul
14
comment How to evaluate this trigonometric limit?
@RajathKrishnaR, Can have a look into math.stackexchange.com/questions/865509/…
Jul
14
comment Find the limit as $x$ tends towards $\frac{\pi}{4}$
@user3397, Can have a look into math.stackexchange.com/questions/865509/…
Jul
14
comment Solving a trigonometric limit
@user3002473, How about this?
Jul
14
answered Solving a trigonometric limit
Jul
14
answered Find $\lambda$ if $\int^{\infty}_0 \frac{\log(1+x^2)}{(1+x^2)}dx = \lambda \int^1_0 \frac{\log(1+x)}{(1+x^2)}dx$
Jul
13
comment Inverse Trigonometry proof
Like math.stackexchange.com/questions/523625/…, we need to assume $$\cot x\cdot\cot^3x<1$$
Jul
13
comment How to solve this $ (7/2)\bmod5$?
@user164013 $$ab\pmod p\equiv a\pmod p\cdot b\pmod p,$$ right?
Jul
13
answered How to solve this $ (7/2)\bmod5$?
Jul
13
answered Equation Theory: A polynomial with specific remainders when divided by specific divisors. What is the remainder when divided by BOTH divisors
Jul
13
comment Solving a trigonometric limit
I really like the usage of mathworld.wolfram.com/ProsthaphaeresisFormulas.html (+1)
Jul
13
answered Solving a trigonometric limit
Jul
13
comment How to express a trigonometic equation in $\sin 2\theta $ and $\cos 2\theta $?
We need to add $\displaystyle\frac\pi2<\theta<\pi,\cos\theta<0$
Jul
13
comment Finding the $\cot\left(\sin^{-1}\left(-\frac12\right)\right)$
You need to include why $\cos x$ is $\ge0,$ here?
Jul
13
comment What is the effect of taking the sine of inverse cosine?
Related : math.stackexchange.com/questions/861191/…
Jul
12
comment Combination of quadratic and arithmetic series
@doank, See : math.stackexchange.com/questions/183316/…
Jul
12
answered Combination of quadratic and arithmetic series
Jul
12
revised If $\alpha, \beta \in [0,\pi]$ then the minimum value of $\sin(\frac{\alpha +\beta}{2})$ is…
added 83 characters in body