Question involving 4 equations in 4 variables
73504
Why $(a+d)(b+c)$ equals $-16$?
131995
Two variables limit question
108558
Find multiple solutions of a non-linear system with more variables that equations
71360
How do I represent the following equations
18510
How to solve the following equation numerically?
131543
inequality with three variables and condition
15753
Solve the following equation in positive integers $x$ and $y$
128425
How to obtain numerical solutions of a two-variable equation?
146888
Derivative of function with 2 variables
95913
Solve for $x$: $2^x=4x$
16946
How many solutions for an equation with simple restrictions
10686
Finding the equation of more than one tangent line
95633
Help with this trigonometry problem
53725
Factor $(x+y)^4+x^4+y^4$
94965
Solve $x\equiv 1\pmod2$, $x\equiv 2\pmod3$, $x\equiv 3\pmod4$, $x\equiv 4\pmod5$, $x\equiv 5\pmod6$ and $x\equiv 0\pmod7$
140933
How to change the system in four first order equations?
128576
How to find $x^4+y^4+z^4$ from equation?