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12.4 Exercise 86

Avg difficulty 2.5

Use the definition for the derivative at a point x=a, x = a , lim x→a f(x)−f(a) x−a , \underset{x \rightarrow a}{\lim} \frac{f \left(x\right) - f \left(a\right)}{x - a} , to find the derivative of the functions.

f(x)=5 x 2 −x+4 f \left(x\right) = 5 x^{2} - x + 4

OpenStax Precalculus 2e, 12.4 Derivatives, exercise 86

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.