Find the equation using the tangent line to the curve defined by the equation at the specific point.

(x^2+y^2)^2= 4x^2y; (-1,1)

Use implicit differentiation to verify that the equation implicitly defines a solution of the differential equation.

y^2= 1+Ce^-2x; y(y'+y)=1

My teacher just assigned theses and did not explain what to do im lost please help. I believe derivatives are used as well as the chain rule...i think