​
x0
h
Using Forward Finite Difference
f'[0]≃-0.0499583 True value: f'[0]=0.
Using Backward Finite Difference
f'[0]≃0.0499583 True value: f'[0]=0.
Using Centred Finite Difference
f'[0]≃0. True value: f'[0]=0.