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Mathematics
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76david76
  • Member for 8 years, 2 months
  • Last seen more than 6 years ago
  • Israel
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Is this site only for questions?
Dec 28, 2016
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Do the Taylor series of $\sin x$ and $\cos x$ depend on the identity $\sin^2 x + \cos^2 x =1$?
13
Why is this inequality true? $(a+b)^2\leq 2(a^2+b^2)$
7
How to prove that if $2^n-1=a\cdot b$ then $a+b\neq 2^m$
7
Rational solutions for $\tan(\pi x)=y$
5
prove; The sum of part of the numbers $1,2,...,n$, can be the average of the remaining numbers iff $n+1$ is a square.