Solution 1.10¶

1.10 a)¶

if x<0:
    x=-x

1.10 b)¶

def absol(x):
    if x<0:
        x=-x
    return x

1.10 c)¶

def absol(x):
    if x<0:
        x=-x
    return x

import numpy as np
nFails=0
for val in range(100):
    thisX = np.random.random()*2-1
    if abs(thisX)==absol(thisX):
        nFails += 1
if nFails>0:
    print("%i of the abs calculations failed" %(nFail))
else:
    print("success! All passed!")

Test the output of your new function against the built-in abs() for 100 random numbers between -1 and 1. Count the number of fails and report with a print statement at the end whether the method works.