Odpowiedzi

2009-12-11T00:28:07+01:00
P=(x+y)*h*(1/2)
P=xy+y^2
xy+y^2 = (x+y)*h*(1/2)
2xy+2y^2=(x+y)*h
h= [2xy+2y^2] / (x+y)
h= 2y(x+y) / (x+y)
h=2y