- zamieniana całka
L= \(xydx + (x + y)dy)
OA
i
vx=x vv~y
L=\ \xy vxdt + (x +y)vydt)
i(/) = i; y(t) = 3t2 L = J(/ /3 -1 + (/ + /3)-3/2)ć//
n
247