4. [2] In this question you will approximate the (Gauss) error function erf(x) dt = 1 / 2 . (-1)*7.21+1 . IT 216 i=0 using the power series expansion 2 2 23 25 7 erf(x) + + (2i + 1)i! 3 10 42 Write the code that computes the sum above, and which stops when either of the two events happens: (1) The number of terms added exceeds max_terms. So if max_terms=4, (and option (2) has not stopped the summation), your code should return the sum of the first four terms. (2) The tolerance tol has been reached (and option (1) has not stopped the summation), i.e., the absolute value of the next term to be added is smaller than tol. The remaining parameters and relevant information are given in the template