The language needs to be in python

Exponential Function Write a function to compute the exponential function e using the truncated series 100i i-0 Do not rearrange the terms of the summation. Given a positive number a, compute beand cusing the function you wrote. You will notice that b has incurs more error than e due to cancellation. Compute the magnitude of the relative errors of b, c using the reference value given. INPUT a: positive number of type float. .ref_val: reference value for ea OUTPUT err_b : magnitude of the relative error for b err_c magnitude of the relative error for e