ddx (x2cos(x))=2xcos(x)x2sin(x)
 
« hide steps
ddx (x2cos(x))=2xcos(x)x2sin(x)
  • steps
  • ddx (x2cos(x))

  • Apply the Product Rule:    (f·g)=f ·g+f·g
    f=x2, g=cos(x)
    =ddx (x2)cos(x)+ddx (cos(x))x2

  • show steps
    ddx (x2)=2x
    show steps
    ddx (cos(x))=sin(x)
    =2xcos(x)+(sin(x))x2

  • Simplify
    =2xcos(x)x2sin(x)

Number Line