Posted by Niki on Saturday, October 13, 2007 at 11:58pm.
I don't understand how to find the maximum and minimum.
Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.
15.f(x) = x2 + 2x  4
20.f(x) = 2x2  4x
19.f(x) = x2  2x + 1
30.f(x) = 3x2  3x

Algebra Maximum and minimum.  Reiny, Sunday, October 14, 2007 at 1:29am
#15 and #30 open downwards, so they have a maximum
#20 and #19 open upwards, so they have a minimum.
change the equations to the form
f(x) = a(xh)^2 + k by completing the square
You should have learned how to do this, and read the vertex from that form.

Algebra Maximum and minimum.  jones, Saturday, August 20, 2011 at 2:56am
what are the maximum value and minimum value of (x)=12sin(2x2pi/3)5l+3

Algebra Maximum and minimum.  butt face, Monday, November 28, 2011 at 6:09pm
2x2 16x+4= i do not know

Algebra Maximum and minimum.  Anonymous, Friday, September 23, 2016 at 5:03pm
Find the minimum and maximum possible areas of a rectangle measuring 2 km by 5 km.
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