Mathematics
OpenStudy (anonymous):

At what point is the tangent to f(x) = x^2 + 4x - 1 horizontal?

OpenStudy (anonymous):

take the derivative, set it equal to zero, and solve. or else just find the vertex

OpenStudy (anonymous):

vertex is $-\frac{b}{2a}=-\frac{4}{2}=-2$ so the point is $(-2,-5)$

OpenStudy (lalaly):

The tangent line will be horizontal at the vertex. You can either graph the equation to find it or you can complete the square.

OpenStudy (lalaly):

oh didnt see ur answer satellite,

Latest Questions
PapaLazy: what does elmo + elmo equal ._. very important
12 minutes ago 2 Replies 0 Medals
Victorya: why do you use math in this world?
5 minutes ago 8 Replies 4 Medals
PapaLazy: How you work dis ._.
38 minutes ago 68 Replies 6 Medals
Gorillaz1002: i need your opinion on this i updated it a little
1 hour ago 23 Replies 3 Medals
xXQuintonXx: @aevans182 ur dm's r off -_-
14 minutes ago 3 Replies 0 Medals
MrsHero: Help ss down below ;/..
1 hour ago 7 Replies 1 Medal
MrsHero: Help ss down below ;/
1 hour ago 0 Replies 0 Medals