Finding y'' for x^4+y^4=1 by implicit differentiation

[gillgill]

Find y'' by implicit differentiation
x^4+y^4=1
i found that y'=-x^3/y^3
y''=[(y^3)(-3x^2)-(-x^3)(3y^2)(y')]/(y^3)^2
y''=[-3x^2(y^3)-(-x^3)(3y^2)(-x^3/y^3)]/y^6
then i am stuck...please help...thanks

 

[whozum]

You really hsould learn latex.

Anyway, you already have the second derivative.. simplifying isn't important.

 

[gillgill]

can anybody teach me latex then?

 

[whozum]

there's a readme on it in one of the forums, i think its general physics.

 

[Hippo]

Just read over quotations from those that use it.

 

[futb0l]

I don't think you need to simplify anything...

 

[dextercioby]

It looks horrible with those minus signs.U could get rid of them.

Daniel.