Question: 1. (20 pts) Compute the forward, central, and backward numerical first derivative using, 2, 3, and 4 points for the function y cosx at x-/4

1. (20 pts) Compute the forward, central, and backward numerical first derivative using, 2, 3, and 4 points for the function y cosx at x-/4 using step size h-/12. Provide the analytic form of the derivatives, as well as table of the computed relative error for each approximation with five significant digits
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