Please write in Python.

Solving for the minimum 0 points minimize f, (z) = 20 + z2-cos(2TZ) Given the cost function f. find the location of the minimum of fr, z.. Store it as xstar and the corresponding SLRX x^*) as fstar . Your submission should include a function f_r( x and float s named xstar and fstar. Available techniques include: graphical, calculus (derivative+ Newton's method), or scipy.optimize.minimize Starter code (clc to vew) # Define f-r(x). # Locate . xstar" and .fstar