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| PAGE: 416 | SET: Exercises | PROBLEM: 72 |
The exponential equation is 
.
Consider two functions as 
and 
.
Graph :
Draw a coordinate plane.
Graph the functions 
and 
in the same coordinate axis.
Observe the above graph :
The two graphs intersects at a point 
.
Thus, the solution is 
.
Algebraic conformation :
The equation is 
.
Consider .
Rewrite the equation as below :
Apply formula: 
.
Apply change-of-base formula : 
.
.
Thus, the solutions is .
Graph of the equation is :
The solution is .
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