# MATLAB: Exponential Function using Taylor series

Hi, I've been trying to write a code which has a row vector input of numbers (x in my code) and the output is row vector e^x (y in my code). e^x is given by the sum of: x^n/n! where n=0,1,2… I have to try and write an unbounded while loop with these conditions: n has a maximum of 50 and that y is more than 0.001 (if less than 0.001, sequence is terminated).
This is what I've done:
the problem is:
1)i've written a loop for the factorial function in a different script, how do i input that into this one?
2)my output is still less than 0.001 when it shouldn't have happened. when given this row vector: [-2 -1.5 -1] the output should be [0.1365 0.2232 0.3679] but I do not obtain these numbers. 🙁
Any help would be amazing! thanks 🙂

x = input(etc)e = zeros(size(x)); % your result vector, see (3) belowfor k=1:numel(x)    n = 0;    while( use x(k) here instead of just x )        etc