differentiation for a function

y'=x-y^2

give me the function to get derivative as

y''  =1-2*y*y'

[Walter Roberson]

That is not the derivative: the 1 should not be there.

Use the symbolic toolbox.

Answer 1

[Birdman]

syms y(x)
diff(diff(y,x)==x-y^2)

Answer 2

[Torsten]

syms x y(x)
diff(x-y^2,x)

Best wishes

Torsten.