(c) Let $f(x) = \exp(x) - x^5$. In the long run, the exponential dominates the polynomial, so this function grows unbounded. By graphing over the interval $[0, 15]$, you can see that the largest zero is less than 15. Find a bracketing interval and then use fzero to identify the largest zero:
(d) Find the zero of the function
$f(x) = 5x + 6 \cdot \ln((1 - x)/x)$.
(Be careful with the domain!)