Im having issues with my python program. It wont display an answer. I want to perform the bisection method and show roots as well as show answer on a graph. I have no idea why it is not working. Thank you in advance. def f(x): return x**3 + 1 def bisection (a,b,tol): xl = a xr = b while(np.abs(xl-xr))=tol: c=(xl+xr)/2.0 prod=f(xl)*f(c) if prod>tol: xl=c else prod