Calculus emergency! Please help!

Question

anonymous · Answer

The ellipse x^2+ 3y^2=13 has two points when x=-1. So I have to find the slope of the tangent line coming off of both of these points. Which are (-1,2) and (-1,-2 )

surry99 · Answer

use implicit differentiation to find dy/dx

anonymous · Answer

How so?
\

surry99 · Answer

do you know what is is?

anonymous · Answer

(f(x+h)-f(x))/h... yes?

surry99 · Answer

no...see the following video https://video.search.yahoo.com/video/play;_ylt=A0LEVvTSsr5UXFcAzfglnIlQ;_ylu=X3oDMTB0ZjNuMHJ1BHNlYwNzYwRjb2xvA2JmMQR2dGlkA1lIUzAwM18x?p=implicit+differentiation&tnr=21&vid=13B06BAC98571BADD50C13B06BAC98571BADD50C&l=131&turl=http%3A%2F%2Fts1.mm.bing.net%2Fth%3Fid%3DUN.608033903438335376%26pid%3D15.1&rurl=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DiPhZRbhJAds&sigr=11b1c5mgv&tt=b&tit=Implicit+Differentiation+-+Basic+Example+1+%2F+3&sigt=11epmp5tb&back=https%3A%2F%2Fsearch.yahoo.com%2Fyhs%2Fsearch%3Fp%3Dimplicit%2Bdiffenrentiaon%26ei%3DUTF-8%26hsimp%3Dyhs-001%26hspart%3Dmozilla&sigb=1337qkhc3&hspart=mozilla&hsimp=yhs-001

surry99 · Answer

to solve:
d/dx(x^2 + 3y^2 = 13)  

 when you take the derivative of 3y^2 you must use the chain rule remembering y = f(x)