Question: Exercise 4-2: Lets say that we are using a finite-difference scheme to compute some derivative of a function f(t): 1 (-3f(t)+4f(t+ At) f(t +

Exercise 4-2: Lets say that we are using a finite-difference scheme to compute some derivative of a function f(t): 1 (-3f(t)+4f(t+ At) f(t + 2At)) 2At Which derivative are we computing (i.e., f'(t), f"(t), etc.)? What is the order accuracy in At. Please explain and show your work.

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