Write the function   `y=-7/(x+1)^9` in the form `y=f(u)` and `u=g(x)`, then find `dy/dx` as a function of `x`.

`f(u)=`  

`g(x)=`  

Determine `dy/dx`.

`dy/dx=`  

Hint

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Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question

Box 2: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question

Box 3: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question