An equation is a mathematical statement that shows the relationship between two expressions that are equal to each other. It typically contains variables, constants, and mathematical operations, and the goal is often to find the values of the variables that make the equation true.
I was going through an article. I have the following functions,
$$f(\text{r})\text{=}-\frac{2 M r^2}{g^3+r^3}+\frac{8}{3} \pi P r^2+1$$
$$\text{v}(\text{r})\text{=}\frac{f(r)}{r^2}$$
Now I want to solve v'[r]=0 for r. Clearly This cannot be solved analytically. But there they solved it...