. Consider the function f(x)=1+r sin (a) Plot the graph of f(x) in MATLAB and use the plot to estimate the value of the smallest positive root of f(x). Include the code as well as the plot you obtained. (b) Do 3 iterations of the bisection method (by hand) to estimate the root of the function on the interval [3, 3.3]. (c) How many iterations are required with the bisection method, on the interval [3,3.3], to obtain the true error in (b) less than 10-4?