Let f(x)=3x^ 5 -2x^ 4 +7x^ 3 -5x^ 2 +4x-1

MATHEMATICS · Multi-part · AP · Calculus AB · Differentiation: Composite, Implicit, and Inverse Functions · Differentiation: Composite, Implicit, and Inverse Functions

Problem

Let f(x)=3x5−2x4+7x3−5x2+4x−1.f(x)=3x^{5}-2x^{4}+7x^{3}-5x^{2}+4x-1. Answer the following: (i) Find f′(x),  f′′(x),  f′′′(x),  f(4)(x)f'(x),\;f''(x),\;f'''(x),\;f^{(4)}(x) and f(5)(x)f^{(5)}(x). (ii) Show that f(5)(x)f^{(5)}(x) is a constant and state its value. (iii) Verify that f(6)(x)=0f^{(6)}(x)=0 for all real xx. (iv) Evaluate f(5)(2)f^{(5)}(2). Comment on whether the result depends on the point chosen.

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