College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.4 - Rational Exponents and Radicals - P.4 Exercises: 91

Answer

(a) $2^{1/2}>2^{1/3}$ (b) $2^{-1/2}<2^{-1/3}$

Work Step by Step

(a) Since $\displaystyle \frac{1}{2}=0.5>\frac{1}{3}=0.3\bar3$, we know that: $2^{1/2}>2^{1/3}.$ (b) $(\displaystyle \frac{1}{2})^{1/2}=2^{-1/2}$ and $(\displaystyle \frac{1}{2})^{1/3}=2^{-1/3}$ We know that $-\frac{1}{2}=-0.5
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