Q 56. - Precalculus Enhanced with Graphing Utilities

Question

Use calculator to evaluate the following expression, upto three decimal place.

$\frac{3\log 80-\ln 5}{\log 5+\ln 20}$

Step-by-Step Solution

Answer

The value of the given expression is $\approx 1.110$

Step 1. Given information

Given expression is $\frac{3\log 50-\ln 5}{\log 5+\ln 20}$

Step 2. How to calculate using scientific calculator

Apply a scientific calculator.

Press  button and write the value of   in   after  .

Press  button and write the value of   in   after  .

 

Press   button on the calculator.

It will give the exact value of the logarithmic number.

Round the value upto three decimal places

Step 3. Calculation

By entering the function following previous step, we have, 

The value of the expression $\frac{3\log 80-\ln 5}{\log 5+\ln 20}$is$\approx 1.110$