Question

Differentiate.
y = (r^2 − 9r)e^r

Answer 1

Product rule: \(\frac{d(uv)}{dr} = u*d{v}+v*du\)
\(u=(r^2-9r)\); \(du=(2r-9)\)
\(v=e^r\); \(dv=e^r\)