# Calculus Help

posted by
**Sam**
.

Determine the point at which the graph of the function has a horizontal tangent line.

f(x) = (9x^2)/(x^2+6)

posted by
**Sam**
.

Determine the point at which the graph of the function has a horizontal tangent line.

f(x) = (9x^2)/(x^2+6)