Find the point on the curve y=√(4x) that is closest the the point (3,0)

1. Apr 14, 2010

mg2

1. The problem statement, all variables and given/known data
Find the point on the curve y=√(4x) that is closest the the point (3,0)

2. Relevant equations

3. The attempt at a solution
I don't even know where to start.

2. Apr 14, 2010

Dick

What's the distance between (x,sqrt(4x)) and (3,0)?

3. Apr 14, 2010

mg2

It wasnt given. The only thing given was the point, and the equation.

4. Apr 14, 2010

Dick

No, no. In general, what's the distance between two points (a,b) and (c,d)? Use a general distance formula. You don't have to be given the formula.

Last edited: Apr 14, 2010