Question

Use a graphing utility to evaluate the logarithm by (a) using the natural logarithm key and (b) using the integration capabilities to evaluate the integral .

ln 0.8

Answer 1

 Step 1:

(a)

The logarithm value is .

                         (From the logarithm table: )

Step 2:

(b)

Find the natural logarithmic value from integration.

Substitute .

Step 3:

Now plot a graph for the function at .

Graphically the value is .

Solution:

.