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mahmoud afefey

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 6 years, 10 months
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  • Last seen Jun 5 '14 at 19:10

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18 Alternative definition of hyperbolic cosine without relying on exponential function Apr 16 '14
4 Verify the identity $\sin 3x + \sin x = 4\sin x - 4\sin^3 x$ Mar 19 '14
2 calculate an approximate value of integral Apr 16 '14
2 Evaluate the integral $I=\int_0^{1.6}\frac {1}{1+x^4} dx$ Apr 12 '14
0 Verify :$\cos^2x=\cot^2x-\frac{\cos^2x}{\tan^2x}$ Apr 16 '14

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