Integral dari x cos (x^2+4) akar dari sin (x^2+4) dx

jawab

u = (x² + 4) 
du  =  2x dx
x dx = 1/2 du

= 1/2 ∫   cos u sin^(1/2) u   di

= 1/2 (2/3) sin^(3/2) u + c

= 1/3 sin^(3/2) (x² + 4 ) + c

= 1/2