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Home > PC3 > Chapter 10 > Lesson 10.1.1 > Problem 10-12


Write the equation of a cosine function that has a maximum at and a minimum at .  

Horizontal shift: Since the maximum point is at (2, 5) a cosine function has been shifted 2 units right.

Since a maximum is at and a minimum is at , half of a cycle is units. Hence, the period is .
Use the formula to calculate .