Which of the following are true regarding the first derivative of the function f(x) = cos √x at x = 2? The forward approximation of the first derivative with h = 0.1 is -0.3458 The central difference approximation of the first derivative with h = 0.1 is -0.3492 The backward first derivative with h = 0.1 is -0.3526 The analytical first derivative is f'(x) = 1 √ sin √x

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