Mathematica Number and location of minima

1. May 11, 2017

spaghetti3451

Take the function

$$f(x) = ax^{2} + bx^{4} - c \cos(x/d),$$

where $a$, $b$, $c$ and $d$ are arbitrary parameters.

For some given choice of the parameters, how do you find the number of local minima of the function and the location of the minima?

2. May 16, 2017

PF_Help_Bot

Thanks for the thread! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post? The more details the better.