Thread: Maths.....

Completing the square - Wikipedia, the free encyclopedia

t^2 - 9t +61/4 -> (t-(9/2))^2 + (-5) completing the square. Check the formula how these were calcumulated.

"ƒ(x − h) + k = (x − h)² + k is a parabola shifted to the right by h and upward by k whose vertex is at (h, k), as shown in the bottom figure."

so, it reaches it's lowest at t=4.5, which is -5, like hydraral said. However, without the theory behind it, math is just guessing.

I could be wrong though.