a. For the function f(x) = 4x2 + 11x, find the value of
Chapter 3, Problem 48E(choose chapter or problem)
Problem 48E
a. For the function f(x) = −4x2 + 11x, find the value of f′(3), as well as the approximation using
and using the formula in with h = 0.1.
b. Repeat part a using h = 0.01.
c. Repeat part a using the function f(x) = −2/x and h = 0.1.
d. Repeat part c using h = 0.01.
e. Repeat part a using the function and h = 0.1.
f. Repeat part e using h = 0.01.
g. Using the results of parts a through f, discuss which approximation formula seems to give better accuracy.
Exercise
Explain why
should give a reasonable approximation of f′(x) when f′(x) exists and h is small.
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