Find `(dy)/(dx)` for `y=sin(x^2+1)dot`

Explanation

`"Let "y= sin(x^(2)+1).`
Putting `u=x^(2)+1," we get y sin u"`
`therefore" "(dy)/(dx)=cos u and (du)/(dx) = 2x`
`"Now, "(du)/(dx)=(dy)/(du).(du)/(dx)`
`= (cos u) (2x)=2x cos(x^(2)+1)`