compute-cos4-x-dx-using-power-reduction-identities

Question

Compute ∫ $$cos^4 x dx $$using power-reduction identities.

Accepted Answer

(3/8)x + (1/4) sin 2x + (1/32) sin 4x + C

Answer

x/2 + (1/8) sin 4x + C

Answer

(3/8)x + (1/2) sin 2x + (1/32) sin 4x + C

Answer

(1/4)x + (1/2) sin 2x + (1/8) sin 4x + C

Compute ∫ cos^4 x dx using power-reduction identities.