5. Evaluate each of the following integrals, using the given substitution or identity. Solutions using other methods are not acceptable. (a) [cos' xsin xdx (substitution
5. Evaluate each of the following integrals, using the given substitution or identity. Solutions using other methods are not acceptable. (a) [cos' xsin xdx (substitution u = sinx ) TT / 4 (b) Jo tan'xsec* xdx (substitution u = tan x ) (c) [sin(5x) sin(3x)dx ( sin( A) sin(B) = ~ [cos(A - B) - cos(A + B)]) (d) [cos(6x) cos(4x)dx ( cos(A) cos(B) = ~ [cos(A - B) + cos(A + B)])
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