- #1
jbowers9
- 89
- 1
Homework Statement
integral (sin^4(x) + cos^4(x))^.5 dx
Homework Equations
sin^2(x) = (1 - cos^2(x))
The Attempt at a Solution
cos^4(x) + {1 - cos^2(x)}^2 = 2cos^4(x) -2cos^2(x) + 1
subst u = cos^2(x)
integral (2u^2 - 2u +1)^.5