Use the Chain Rule to Compute the Derivative Of $\frac { ( 3 x + 1 ) ^ { 3 } } { ( 3 x + 1 ) ^ { 3 } + 1 }$

Short Answer

Use the chain rule to compute the derivative of $\frac { ( 3 x + 1 ) ^ { 3 } } { ( 3 x + 1 ) ^ { 3 } + 1 }$ at x = -1.
Enter just a reduced fraction.