Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 11 - Section 11.1 - Derivatives of Powers, Sums, and Constant Multiples - Exercises - Page 795: 42

Answer

$8.6x^{3.3}+0.6x^{-0.4}$

Work Step by Step

SUMMARY (rules in differrential notation): 1. The Power Rule$:\ \ \ \displaystyle \frac{d}{dx}[x^{n}]=n\cdot x^{n-1 } $ 2. Sum Rule: $\displaystyle \ \ \ \frac{d}{dx}[f\pm g](x)=\frac{d}{dx}[f(x)]\pm\frac{d}{dx}[g(x)] $ 3. Constant Multiple Rule:$\ \ \displaystyle \frac{d}{dx}[cf(x)]=c\cdot\frac{d}{dx}[f(x)] $ 4. Constant times x:$\ \ \ \displaystyle \frac{d}{dx}(cx)=c $ 5. Constant:$\displaystyle \ \ \ \ \ \frac{d}{dx}(c)=0 $ ------------------ $ \displaystyle \frac{d}{dx}(2x^{4.3}+x^{0.6})$ = $\ \ \ $...(2) $=\displaystyle \frac{d}{dx}(2x^{4.3})+\frac{d}{dx}(x^{0.6})$ = $\ \ \ $...($3$) $=2\displaystyle \frac{d}{dx}( x^{4.3})+\frac{d}{dx}(x^{0.6})$ = $\ \ \ $...($1$) $=2(4.3x^{3.3})+0.6x^{-0.4}$ $=8.6x^{3.3}+0.6x^{-0.4}$
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