Kate and Sarah are working on taking the derivative of f(x) = Kate uses the quotient rule to get, f'(x) = (3x+4) 2-2x (3) (3x+4)² = 8 (3x+4)² 2x 3x+4 Sarah converts it into a product and uses the product rule and the chain rule: f(x) = 2x(3x + 4)-¹ f'(x) = 2x(-1)(3x + 4)−²(3)+2(3x + 4)-¹ = 2(3x + 4)¯¹ − 6x(3x+4)¯² . Explain the discrepancies between the two answers. Which procedure do you think is preferable? Explain. Answer should be in 3-5 sentences.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Kate and Sarah are working on taking the derivative of f(x) =
Kate uses the quotient rule to get,
f'(x) =
(3x+4) 2-2x (3)
(3x+4)²
=
8
(3x+4)²
2x
3x+4
Sarah converts it into a product and uses the product rule and the chain rule:
f(x) = 2x(3x + 4)-¹
f'(x) = 2x(-1)(3x + 4)−²(3)+2(3x + 4)-¹
= 2(3x + 4)¯¹ − 6x(3x+4)¯² .
Explain the discrepancies between the two answers. Which procedure do you think is
preferable? Explain. Answer should be in 3-5 sentences.
Transcribed Image Text:Kate and Sarah are working on taking the derivative of f(x) = Kate uses the quotient rule to get, f'(x) = (3x+4) 2-2x (3) (3x+4)² = 8 (3x+4)² 2x 3x+4 Sarah converts it into a product and uses the product rule and the chain rule: f(x) = 2x(3x + 4)-¹ f'(x) = 2x(-1)(3x + 4)−²(3)+2(3x + 4)-¹ = 2(3x + 4)¯¹ − 6x(3x+4)¯² . Explain the discrepancies between the two answers. Which procedure do you think is preferable? Explain. Answer should be in 3-5 sentences.
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