Hass -Differentiating "implicitly" is actually quite easy once you get the hang of itI always like to use y' instead of dy/dx because it really simplifies the process, so when you see the notation y' it really just means dy/dx. OK?, so here we go ...[Note: whenever you see a term like xy, you MUST use the PRODUCT RULE!]Now just solve for y' (which is really dy/dx) in the above equation. I'll leave it for you to finish the algebra.Hope that helps