Finite Math and Applied Calculus (6th Edition)

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

Chapter 9 - Section 9.2 - Exponential Functions and Models - Exercises - Page 642: 8

Answer

$\begin{array}{|c|r|r|r|r|r|r|r|} \hline x & -3 & -2 & -1 & 0 & 1 & 2 & 3 \\ \hline h(x) &-54 & -18 & -6 & -2 & -\displaystyle \frac{2}{3} & -\displaystyle \frac{2}{9} & -\displaystyle \frac{2}{27} \\ \hline \end{array}$ Technology formula:$\quad -2*3$^$(-x)\quad$or$ \quad-2*(1/3)$^$x$

Work Step by Step

$-2(3)=-2\displaystyle \times(\frac{1}{3})^{x}$ Technology formula:$\quad -2*3$^$(-x)\quad$or$ \quad-2*(1/3)$^$x$ $f(-3)=-2(\displaystyle \frac{1}{3})^{-3}=-2(3^{3})=-54\qquad $tech: $-2*(1/3)$^(-3) $f(-2)=-2(\displaystyle \frac{1}{3})^{-2}=-2(3^{2})=-18\qquad $tech: $-2*(1/3)$^(-2) $f(-1)=-2(\displaystyle \frac{1}{3})^{-1}=-2(3^{1})=-6\qquad $tech: $-2*(1/3)$^(-1) $f(0)=-2(\displaystyle \frac{1}{3})^{0}=-2(1)=-2\qquad $tech: $-2*(1/3)$^0 $f(1)=-2(\displaystyle \frac{1}{3})^{1}=-2(\frac{1}{3})=-\frac{2}{3}\qquad $tech: $-2*(1/3)$^1 $f(2)=-2(\displaystyle \frac{1}{3})^{2}=-2(\frac{1}{3^{2}})=-\frac{2}{9}\qquad $tech: $-2*(1/3)$^2 $f(3)=-2(\displaystyle \frac{1}{3})^{3}=-2(\frac{1}{3^{3}})=-\frac{2}{27}\qquad $tech: $-2*(1/)$^3
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