In the U
 f(x) =
 f'(x) =
 xsinx COSX
 oxsinx - cosx + (xsinx) - D[cosx)
 +
 D[x sinx] =
 J₁
 11
 =
 o[f(x). g(x)] = f'(x) g(x) + f(x
 $6
 D[sinx]
 D[x]. sinx + x.
 . Sinx
 Sinx + x CUSX
 1
 sinx +X COSX
 x COSY
 £²
 (x) = (sinx +xcosx) COSX + (xsinx)(-sinx)
 f'(x) =
 2
 X Sin x