Prove that if $f$ is odd and differentiable on $I$ ,then $f^\prime$ is even on $I$
44880
Prove that the derivative of an even differentiable function is odd, and the derivative of an odd is even.
140294
prove that $n >2$ and $n$ is a prime then $n$ is odd
91947
Proof of $ f:I_n \rightarrow I_m \Rightarrow n = m$
65511
Proving the following false: $f(x)=2x+1$ produces a prime number if and only if x is prime
40269
Proving if $x^3$ is even, then $x$ is even.
68048
Prove that if $f$ is differentiable on $[a,b]$ and $f'$ is monotonic on $[a,b]$ , $f'$ is continuous on $[a,b]$
110093
Proving that the solution to $f^{\prime}(x) = \frac{1}{x^{2} + (f(x))^{2}}$ is bounded above.
152841
I want to show that $f(x)=x.f(1)$ where $f:R\to R$ is additive.
121890
Proof that $ p $ | ${ p^n \choose k } $ for any prime $p$ and $ k < p^n$
108380
Assume $P$ is a prime ideal s.t. $K \subset P$, show $f(P)$ is a prime ideal
111470
Proof of differentiability of $f(x)$
135577
Prove the existence of $c$ such that $f'(c) = 2c(f(c) - f(0))$
21178
Show that $f$ extends to a smooth map.
158563
If $m^4+4^n$ is prime, then $m=n=1$ or $m$ is odd and $n$ even
105700
Proving $\,f$ is constant.
72054
Show that $\deg f$ is even when $n$ is odd.
96427
Why $f^{\prime}(z)=u_{x}+iv_{x}$?