Question

Analyse the slope and the change in slope for the appropriate intervals of the function
f(x)= 1/(x^2-4x-21)

Answer 1

\[f(x)=\frac{ 1 }{ x^2-4x-21 }\]

Answer 2

https://www.google.com/search?q=f%28x%29%3D+1%2F%28x^2-4x-21%29&ie=utf-8&oe=utf-8
Not very good at this but how this helps:)