find the values of x at at which the curve f(x)=(3x-4)^7(x+5)^4 has a horizontal tangent line
Hello, vinson24!
I assume you know about horizontal tangents
and that it's the algebra that troubles you . . .
You know what to do, right? . . . SolveFind the values of at at which the curve
has a horizontal tangent line.
Product Rule: .
We have: .
Factor: .
. . . . . .
. . . . . . . . . . . . . .
And we have: .
But please check my algebra . . .
.