Question

at what point is the tangent to f(x) = x^2 + 4x - 1 horizontal?
im not sure if it matters with this but i got the derivative 2x + 4

Answer 1

the tangent is horizontal when the slope is xero

Answer 2

yup
horizontal means it is zero

Answer 3

although i do like xero

Answer 4

linkin park

Answer 5

ok but i need a point

Answer 6

Misread as finding the tangent to that line, sorry.

Answer 7

set the derivative = 0..get x

Answer 8

plug x in...the original eqn..get y

Answer 9

oooohh yes! derp. lol. thank you!