# Minimum of a function that depends on several variables

I have a function,

$$A=\sum_{m}mx$$ provided

$$x=\frac{2(y1+iz)}{2t1-\left|\frac{t2}{iy2}+z\right|}$$

Here $$y1,z,t1,t2,y2$$ all are varying. But $$x$$ needs to be in the limit of $$-1$$ and $$0$$. Is there a way to plot $$A$$ Vs $$x$$ in Mathematica in such a way to find the minimum of the function $$A$$.

• The math is not clear. What does the summation index $m$ run over? It seems that $x$ is independent of $m$, in which case $\sum_m mx = x \sum_m m$ is a constant times $x$, but probably that is not what you mean. Jun 16 at 12:30