- #1
JoshMaths
- 26
- 0
Hi,
So f(x,y) = xe-x(y2 - 4y)
Find all stationary points and classify them i got
for fx(x,y) s.p (1,4),(1,0)
for fy (x,y) s.p (0,2)
I thought that you don't need double differentials at this stage and if it is a s.p it must satisfy
for fx(x0,y0) = 0
for fy (x0,y0) = 0
which means s.p must hold for both partial derivatives?
I know the s.ps are wrong so if someone could advise that would be great.
Josh
So f(x,y) = xe-x(y2 - 4y)
Find all stationary points and classify them i got
for fx(x,y) s.p (1,4),(1,0)
for fy (x,y) s.p (0,2)
I thought that you don't need double differentials at this stage and if it is a s.p it must satisfy
for fx(x0,y0) = 0
for fy (x0,y0) = 0
which means s.p must hold for both partial derivatives?
I know the s.ps are wrong so if someone could advise that would be great.
Josh