Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 5 - Logarithmic, Exponential, and Other Transcendental Functions - Review Exercises - Page 393: 14

Answer

$y = 6x - 4$

Work Step by Step

1. Find the derivative $y = 2x^{2} + ln(x^{2})$ $y' = 4x + \frac{1}{x^{2}}(2x)$ $y' = 4x + \frac{2x}{x^{2}}$ $y' = 4x + \frac{2}{x}$ 2. Substitute the $x$ coordinate to find the slope of the tangent $m = 4(1) + \frac{2}{1}$ $m = 4 + 2$ $m = 6$ 3. Substitute the slope of the tangent into the equation of the line $y = mx + b$ $2 = 6(1) + b$ $2 = 6 + b$ $-4 = b$ $b = -4$ $y = 6x - 4$
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