L=X1.Y1^2 + (lamda)(Px.240 + Py.120 - Px.X1 -Py.Y1)

dL/dX2= Y2^2 - (lamda)Px=0
dl/dY2= X2Y2 - (lamda)Py=0
dL/d(lamda)= Px.240 + Py.120 -Px.X2 -Py.Y2=0

I am suppose to get the answer X2=80+40.Px/Py But I can't find this answer
so please help, its driving me crazy

Question

L=X1.Y1^2 + (lamda)(Px.240 + Py.120 - Px.X1 -Py.Y1)
 
dL/dX2= Y2^2 - (lamda)Px=0
dl/dY2= X2Y2 - (lamda)Py=0
dL/d(lamda)= Px.240 + Py.120 -Px.X2 -Py.Y2=0

I am  suppose to get the answer X2=80+40.Px/Py      But I can't find this answer 
so please help, its driving me crazy

anonymous · Answer

So i can't actually completely tell what you're trying to ask?

But it looks like

$$L = x*y ^{2} + \lambda(240*Px + 120*Py - Px*x - Py*y)$$

Is that right?