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6
votes
If $ f\geq0 $ and $ \intop_{0}^{\infty}f\left(x\right) $ converge, and $ \intop_{0}^{\infty}f'\left(x\right) $ converge, does it mean that:
calculus
improper-integrals
asked Aug 23 '20 at 13:07
math.stackexchange.com
5
votes
prove that $ \sin(x+y)=\sin{x} \cdot \cos{y} +\sin{y} \cdot \cos{x} $ using power series (without trigonometric identities)
calculus
sequences-and-series
limits
power-series
trigonometric-series
asked May 5 '20 at 21:14
math.stackexchange.com
5
votes
Proof with transfinite induction
set-theory
cardinals
transfinite-induction
asked Jun 30 '20 at 22:08
math.stackexchange.com
Top Answers
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