if i am trying to Decide whether f(x)=x^2+2x+4 has a minimum or maximum, and find the value.
would it be miniumum of -1 or maximum of -1 , i am getting stuck.
If a > 0, then you have a minimum value.
If a < 0, then you have a maximum value.
It can be shown that the x-coordinate of the vertex is . Once you find that, find
Your parabola opens upward and has a minimum value of -1. It does not have a maximum.