MATLAB:

One way to compute the exponential function e^x is to truncate its Taylor series expansion around x = 0,

e^x = 1 + x + 1/2!*x² + 1/3!*x³ +...

Unfortunately, many terms are required for accuracy if |x| is large. But a special property of the exponential is that e^2x = (e^x)². This leads to a scaling and squaring method: Divide x by 2 repeatedly until |x| < 1/2, use the Taylor series (16 terms should be more than enough), and square the result repeatedly. write a function expss(x) that performs these three steps. (The functions cumprod and polyval can help with evaluating the Taylor expansion.) Test your function on x values -30,-3,3,30.