Matt Picone schreef: > Can someone help me find the equation for a smooth curve which has the > following points? > > x,y > 0,0 > 50,15000 > 100,1000000 > > Thanks hugely in advance. 194*x^2 - 9400*x But it is negative for x<48.45 (and a bit). What sort of curve does it need to be? Parabola? Exponential? - Peter