Finding Global Inverse of $ f(x,y,z)= \left( \frac{x}{a+x+y+z}, \frac{y}{a+x+y+z}, \frac{z}{a+x+y+z} \right).$
49882
Proving $f(x,y,z)=\big(\frac{x}{a+x+y+z}, \frac{y}{a+x+y+z}, \frac{z}{a+x+y+z} \big)$ is injective
145279
Compute the (multiplicative) inverse of $4x+3$ in the field $\frac {\Bbb F_{11}[x]}{\langle x^2+1 \rangle}$?
139436
Show function $f(x,y)=(x^2-y^2,2xy)$ is $1$-$1$ by Inverse Function Theorem
82961
Show that $\left| \frac{1}{x}-\frac{1}{z} \right| \le \left|\frac{1}{x} - \frac{1}{y} \right| + \left|\frac{1}{y} - \frac{1}{z} \right|$.
26617
Minimum value of $ f(x,y,z)=\left(x+\frac{1}{y}\right)^2+\left(y+\frac{1}{z}\right)^2+\left(z+\frac{1}{x}\right)^2. $
74409
Differentiaion Calculus: Trig Inverse Function.
49211
Solving $f(x+y) = f(x)f(y)f(xy)$
44998
Compute integral closure of $F[x,y,z]/(x^2-y^2z)$.
150274
Inverse of a function - $f^-(x)$ in a restricted domain
151297
Second order partial of $f(x,y)=\frac{xy(x^2-y^2)}{x^2+y^2}$
83255
Finding inverse in non-commutative ring
28286
About finding the function such that $f(xy)=f(x)f(y)-f(x+y)+1$
138107
Showing that $\left|\frac{z-a}{1-\bar{a}z}\right|=1$
122329
Determine all functions $f(x)$ such that $f(f(x+y))=f(x)+f(y)$
103251
Solution(s) to $f(x + y) = f(x) + f(y)$ (and miscellaneous questions...)
26562
Inverse of $f(x)=\sin(x)+x$
71252
What is the inverse function of $e^x +x$?