### Home > PC3 > Chapter 2 > Lesson 2.3.2 > Problem 2-139

2-139.

When James solved

is a solution to , but James’ calculator did not give that answer. Why? There are an infinite number of solutions. The calculator chooses the solution that is in the domain of the function's inverse.

Solve

for all real .or Can you get the complete solution entirely from a calculator, or do you have to draw and think?

No, a calculator only gives one possible solution.