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 - Page 31: 97

Answer

See the explanation

Work Step by Step

$\begin{array} nn&2^{1/n}\\ 1&2\\ 2&\sqrt2=1.4\\ 5&\sqrt[5] 2=1.15\\ 10&\sqrt[10] 2=1.072\\ 100&\sqrt[100] 2=1.01 \end{array}$, As $n$ gets larger and larger, $1/n$ approaches $0$. Thus, $2^{1/n}$ approaches $1$. $\begin{array} nn&(\frac{1}{2})^{1/n}\\ 1&\frac{1}{2}\\ 2&\sqrt\frac{1}{2}=0.71\\ 5&\sqrt[5] \frac{1}{2}=0.871\\ 10&\sqrt[10] \frac{1}{2}=0.933\\ 100&\sqrt[100] \frac{1}{2}=0.993 \end{array}$, As $n$ gets larger and larger, $1/n$ approaches $0$. Thus, $(\frac{1}{2})^{1/n}$ approaches $1$. $\begin{array} nn&n^{1/n}\\ 1&1\\ 2&\sqrt2=1.4\\ 5&\sqrt[5] 5=1.38\\ 10&\sqrt[10] 10=1.26\\ 100&\sqrt[100] 100=1.05 \end{array}$, As $n$ gets larger and larger, $1/n$ approaches $0$. Thus, $n^{1/n}$ approaches $1$.
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