Question

Find the minimum value of the function f(x) = x^2 + 5x - 6.

Answer 1

I keep getting -2.500 but apparently thats wrong

Answer 2

it's the vertex

Answer 3

can u put it in vertex form?

Answer 4

LOL ur close with 2.5.

Answer 5

Do you know differe,tiation

Answer 6

Do you know differe,tiation

Answer 7

u solved for the X instead of the y

Answer 8

waaiiittttt......

Answer 9

I think ur right.

Answer 10

First, please recognize that f(x) = x^2 + 5x - 6 has a graph which is a parabola.
Does the parabola open up or down?

If you're still in algebra, use the formula x=-b/a to calculate the x-coordinate of the vertex of the parabola. Then find the value of f(x) there. Then you'll have your coordinates of the minimum.

Answer 11

if u derive the equation u get 0=2x+5

Answer 12

in which case x=-2.5

Answer 13

Then plug that into the equation and see what u get for y!

Answer 14

that is to say, if you find the derivative of f(x) and set the derivative = to zero and solve for x, you'll get that x=-2.5.

Find the associated y value.

Write the two coordinates in the form (x,y).

That's the minimum of this function.

Answer 15

yeah, what @mathmale said