Proof of $e^x - 1 \geq x$ for ${x: -1 \leq x < 0}$
58410
Simplest or nicest proof that $1+x \le e^x$
110826
prove that : $ i = \sqrt {-1}\ $
43226
Intuition behind logarithm inequality: $1 - \frac1x \leq \log x \leq x-1$
126032
Proving a certain inequality
25419
If $n\geq m$ then $(x^m+y^m)^{1/m} \ge (x^n+y^n)^{1/n}$
27570
Prove $(1-x)\ln(1-x)+(1+x)\ln(1+x)\leq 2x^2$ for $0<x<1$
81618
Prove $||a|-|b| | \leq |a-b|$
96133
Prove that $ m_{a} \geq m_{g} \geq m_{h} $ using strict inequalities unless $ a = b $.
88328
Proof of $1+x\leq e^x$ for all x?
4656
Prove that there is a $\delta$ such that $\int_{0}^{1} (f(x))^2dx\leq \delta$$\int_{0}^{1} (f'(x))^2dx$ for all $f$ with these conditions
103030
Proving $\frac{1}{\sqrt{x}}\ge \frac{2}{x+1}$ for $x> 0$
117262
Proving a logarithm inequality
78754
Showing that $E[X|X<x]$ is smaller or equal than $E[X]$ for all x
107254
Real analysis question $e^{-1/x^2}$
7775
Show that $|x-y|\leq |x|+|y|$.
39073
Proving that: $\forall n \in \mathbb{N} :|f^{(n)}(x)|\leq \frac{1}{n+1}$
111316
PROVE if $x \ge-1 $then $ (1+x)^n \ge 1+nx $ , Every $n \ge 1$