# Function: Horizontal Tangent Line

Find the points at which the function has a horizontal tangent line. f(x)=x^2+4x+5

Â© BrainMass Inc. brainmass.com March 4, 2021, 5:45 pm ad1c9bdddfhttps://brainmass.com/math/calculus-and-analysis/function-horizontal-tangent-line-9375

#### Solution Summary

The points at which a function has a horizontal tangent line are found.

$2.19