Question

por favor informar passo a passo ∫4x×sen(x²)

Answer 1

 4∫xsen(x²) dx     

U=x²      dU/dx=2x     dU=2xdx     dx=dU/2x
  
 4∫xsen(U)dU/2x = 4∫sen(U)dU/2 = 2∫sen(U)dU = 2.(-cos(U))

= -2cos(x²)