18- y′ for y = ln( 2x^3- 3x). correct answer: 6x^2-3/2x^3 -3x (3.4) 20- dy/dx for y = e^-2x ln 5x. correct answer: 1-2x ln 5x/xe^2x (3.4)

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Do you think the limit exists? If so, what do you think it is? Find the indicated derivatives in Problems 18–20.

18- y′ for y = ln( 2x^3- 3x). correct answer: 6x^2-3/2x^3 -3x (3.4)

20- dy/dx for y = e^-2x ln 5x. correct answer: 1-2x ln 5x/xe^2x (3.4)

21-  Find the equation of the line tangent to the graph of y = f(x) = 1 + e^-x at x = 0. At x = -1.  correct answer:  y = -x + 2; y = -ex + 1 (3.4)

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