find the stationary point for
i got my fx =3x^3 -4x-32y
and fy= 256y^3-32x-256y
I don't know how to get the three points....any one can highlight to me??
Follow Math Help Forum on Facebook and Google+
Hint : It should help you getting rid off and and you'll be able to solve for and
fx would rather be
Stationary points are points (x,y) where and
So solve for x and y in
how to proceed?
I think that the better way is, as Flyingsquirrel mentioned, to see that 256/32=32/4=8
So if you multiply the first equation by 8, you will be able to get rid of x and y, and keep y^3, while substracting term by term the two equations
2y=x i got it after some manipulation........what next????
What about substituting in one of the equation and solving for ?
sub x=2y into the f(x,y)
i got 80y^4 - 200y^2
"Substituting in one of the equations" meant substituting either in or in but not in , which is not an equation.
i got y=+-(5/4)^(1/2)
No, these are not the solutions for .
i better look at it....
two equation correct?
View Tag Cloud