Find the $a < 0$ for which the inequalities have at least one common solution
54703
Find the a < 0 for which the inequalities have at least one common solutions
56623
Stuck trying to prove an inequality
72081
$\forall x,y>0, x^x+y^y \geq x^y + y^x$
16946
How many solutions for an equation with simple restrictions
124505
Proof that there must exist infinitely many solutions to a homogeneous system of equations when more unknowns than equations
126632
Proving Inequalities with Absolute values
56697
How to show that the given equation has at least one complex root ,a s.t |a|>12
76863
How to show $ \sup \inf g(x,y) \leq \inf \sup g(x,y)$?
14773
Finding distinct solutions for the equation
91131
Question regarding an inequality
131475
Example of the equality of an inequality
124456
Given $x \in \mathbb{R}$ and $N \in \mathbb{N}, N>1,$ find integers $h,k$ with $0 < k \leq N $ that satisfy $\lvert{kx - h\rvert} < 1/N.$
15232
Proving an inequality involving real powers
8920
There exists $C\neq0$ with $CA=BC$ iff $A$ and $B$ have a common eigenvalue
53998
Solving an exponential inequality problem
108885
Systems of equations with a single number
128107
find all $ a \in \mathbb N $ such that $2^a − 1 \equiv 0 \pmod 3$ and $ 4x^2 + 1 \equiv 0 \pmod {\frac{2^a -1}{3}}$ has a solution