Evaluate ∫0π/4tan4(x)dx\int_0^{\pi/4} \tan^4(x) dx∫0π/4tan4(x)dx.
π/4−2/3\pi/4 - 2/3π/4−2/3
2/3−π/42/3 - \pi/42/3−π/4
π/2−1/3\pi/2 - 1/3π/2−1/3
1/3