Matlab

Use chebfun to evaluate f"(x) for f(x)-sin x and x = 6. What is the degree of the interpolation polynomial that it produces for f, and what is the error in its approximation to f"(n/6)? Use chebfun to evaluate f"(x) for f(x)-sin x and x = 6. What is the degree of the interpolation polynomial that it produces for f, and what is the error in its approximation to f"(n/6)