Question

What is the vertex of the parabola given by the equation y = x2 + 4?



(2, 8)



(-2, 8)



(0, 4)



(4, 0)



(0, 0)

Answer 1

y=x^2+4

dy/dx=2x

d2y/dx2=2

So the vertex is at an absolute minimum at (0,4)