Consider the following function: f(x)= sin(x) cos x Use MATLAB to do the following: a. Obtain the expression for the first derivative of the function (df/dx) b. Obtain the expression for the second derivative of the function (df/dx) c. On a single graph, plot all three curves: f(x), df/dx and df/dx in the interval [-]. Use different colors for each curve and a legend to distinguish between them.