LOGARITHMIC FUNCTIONS Solving Logarithmic Equations (Page 4 of 4)

Try graphing the function using a standard window. The solution of the equation will be the value of the x-intercept. Use the CALC zero command to find it. We will use a left bound of 2, a right bound of 5, and a guess of 3.

 ZOOM key. 6: menu selection.

 2nd CALC key. 2: menu selection. 2 ENTER key. 5 ENTER key. 3 ENTER key.

 Calculator screen image. Calculator screen image.

The zero of the function is x = 3, so the solution set of the equation is {3}.
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