Paulo Sérgio

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169 reputation

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bio	website	fatosmatematicos.blogspot.com
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	seen	Feb 28 '12 at 7:58
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9 Answers

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4	How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
4	Prove that for all $n$ in the natural numbers, $n(n - 1) < 2^n$
2	Particular solution to $y'' - 3y' + 2y = 2e^x$
1	How to integrate $ \int x^n e^x dx$?
1	Complete the square of a 4th degree expression $k^4 + 2k^3 -k^2 - 2k + 1$

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169 Reputation

+10	Particular solution to $y'' - 3y' + 2y = 2e^x$
+5	Evaluate the integral $\int_0^\infty \frac{t}{e^t-1}\mathrm dt$
+20	How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
-2	How to find $\sqrt[3]{8i}$

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3 Questions

votes activity newest

5	Evaluate the integral $\int_0^\infty \frac{t}{e^t-1}\mathrm dt$
2	Properties of the greatest common divisor and least common multiple
1	Finite sum of the fractional type

15 Tags

6 calculus × 4	3 differential-equations × 2
5 homework × 2	2 multivariable-calculus
4 induction	1 integral × 2
4 limit	0 algebra-precalculus × 2
4 trigonometry	0 binomial-coefficients

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$Mathematics Stack Exchange$

Mathematics

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