Example

Example 10.18: Converting to Logarithmic Form

To convert an equation from exponential form to logarithmic form, identify the base and the exponent, and rewrite the relationship using the definition y=logaxy = \log_a x if x=ayx = a^y. For example, to convert the exponential equation 23=82^3 = 8, the base is 22 and the exponent is 33, so the logarithmic form is 3=log283 = \log_2 8. For 512=55^{\frac{1}{2}} = \sqrt{5}, the base is 55 and the exponent is 12\frac{1}{2}, resulting in the logarithmic form 12=log55\frac{1}{2} = \log_5 \sqrt{5}. Similarly, for \left(\frac{1}{2} ight)^4 = \frac{1}{16}, the base is 12\frac{1}{2} and the exponent is 44, which gives the logarithmic form 4=log121164 = \log_{\frac{1}{2}} \frac{1}{16}.

Image 0

0

1

Updated 2026-05-26

Contributors are:

Who are from:

Tags

OpenStax

Intermediate Algebra @ OpenStax

Ch.10 Exponential and Logarithmic Functions - Intermediate Algebra @ OpenStax

Algebra

Related