Math problem where graphing calculator may slow you down - part II.

[Marcus von Cube]

(09-12-2014 12:43 PM)CR Haeger Wrote:  If the area under the curve f(x) = 4.0

Is the area positive if the function is negative? Or are we just talking about the definite integral?

EDIT: If the area is always positive, the answer 2π. I split the interval at π/4, π, π+π/4, π+π/2, 2π. All the square roots cancel each other.