differentiation question c3

Please could I have some help this question
A= y + 1/ ( y +3), find dA/ dy simplifying the answer

Use the quotient rule. In this case:

If we say, u=y+1 and v=y+3, differentiate those two equations separately.

Now, multiply u' (the derivative of u) by v and multiply v' by u. Then all you need to do to make it correct when using the quotient rule is have what you've just worked out over v^2.

Oh and then simplify your answer.

It'd be easier to write as a negative power and use the chain rule.