Home > CALC > Chapter 9 > Lesson 9.2.1 > Problem 9-54
9-54.
No calculator! Find all point(s) of intersection for y = 3cos x and y = 2 cos2 x + 1 on the interval 0 ≤ x ≤ 2π. Homework Help ✎
Solve the equations in Step 4. Note that these solutions only give the x-values. The problem asks for the "points", so you need to calculate the corresponding y-values.