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1091169
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location Kolkata, India
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visits member for 2 years, 6 months
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1d
revised Need help solving $\;\arcsin(\sqrt3\sin x)=1$
added 1 character in body
2d
revised Prove $\lim_{x \to 0} \frac{e^{\sin(x)} - e^{\tan (x)}}{e^{\sin (2x)}-e^{\tan (2x)}} = \frac{1}{8}$
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Dec
17
revised More rigorous method for this elementary problem?
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Dec
17
revised More rigorous method for this elementary problem?
added 192 characters in body
Dec
15
revised Primitive roots of $25$
added 131 characters in body
Dec
15
revised Evaluating $\int_{0}^{\pi/2}\frac{x\sin x\cos x\;dx}{(a^{2}\cos^{2}x+b^{2}\sin^{2}x)^{2}}$
added 109 characters in body
Dec
14
revised Determining the last two digits of $229^{10} +37^{10}$
added 569 characters in body
Dec
14
revised Algebra of Combinations.
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Dec
13
revised To prove $(\sin\theta + \csc\theta)^2 + (\cos\theta +\sec\theta)^2 \ge 9$
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Dec
11
revised Old oxford scholarship question: $a^ab^b \ge a^bb^a$
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Dec
9
revised System of congruences with not coprime numbers
added 179 characters in body
Dec
9
revised Help with $\int \frac{1}{(\sin x + \cos x)}$
added 214 characters in body
Dec
9
revised Proving an identity of the Möbius function and Euler’s totient function product
added 26 characters in body
Dec
9
revised Using the half/double angle formulas to solve an equation
deleted 72 characters in body
Dec
9
revised Solving $\cos\theta \cos3\theta -\sin\theta \sin3\theta =0$ , $\theta\in[0,2\pi)$
added 27 characters in body
Dec
9
revised Are these the same? $\int_{-2}^2(2x^2-x)^4$ and $2\int_{0}^2(2x^2-x)^4$
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Dec
8
revised $A,B,C$ satisfy $\sin 2A: \sin 2B: \sin 2C= 5:12:13$ find $A$?
added 52 characters in body
Dec
8
revised Trigonometry - Finding value of expression
added 21 characters in body
Dec
7
revised Find the least significant digit
added 13 characters in body
Dec
6
revised Trigonometrical equations
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