Real numbers inequality
87181
For any given set of 13 distinct real numbers, prove we can always find two numbers $x$ and $y$ that $0<\frac{x-y}{1+xy}\leq 2-\sqrt{3}$.
155232
Prove that inequality is true for $x>0$: $(e^x-1)\ln(1+x) > x^2$
151410
Inequality of continuous functions
23979
Inequality involving sides of a triangle
40700
Proving inequality $(a+\frac{1}{a})^2 + (b+\frac{1}{b})^2 \geq \frac{25}{2}$ for $a+b=1$
33543
is "y1 < x < y2" an inequality or inequalities?
29342
Prove the inequality: $(y+z)*x^4+(x+z)*y^4+(x+y)*z^4\le((x+y+z)^5)/12$ for positive reals.
56623
Stuck trying to prove an inequality
16852
$|e^a-e^b| \leq |a-b|$ for complex numbers with non-positive real parts
155423
lower triangle inequality for complex numbers
117262
Proving a logarithm inequality
41412
Inequality in number theory
48092
Inequality involving a finite sum
56391
Is this inequality true? $ (x + y)^{\alpha} < x^{\alpha} + y^{\alpha} $, for positive $x$ & $y$, and for $0 < \alpha < 1$
32427
Basic mathematical induction regarding inequalities
106979
Prove the inequality and limitation
134049
Showing an inequality is valid