posted by kelly on .
Let p(x,y) be a point on the graph of y= X^2-3
A) Express the distance from P to the point (1,2) as a function of x. Simplify completely.
B) Use your calculator to determine which value of x-yields the smallest d.
d = √[(x-1)^2 + (y-2)^2]
= √[(x-1)^2 + (x^2-3-2)^2]
= √(x^2-2x+1 + x^4-10x^2+25)