i know how to get two of the answers which are 4/3,-5 but the third answer -89/33 i dont know how to get
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 . . .
.