(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The figure shows a lamp located three units to the right of the y-axis and a show created by the elliptical region x^{2}+4y^{2}[tex]\leq[/tex]5. If the point (-5,0) is on the edge of the shadow, how far above the x-axis is the lamp located?

2. Relevant equations

Implicit Differentiation has to fit in here, since the chapter is on Implicit Differentiation, just not sure how.

3. The attempt at a solution

I figure the tangent line has to be at (-1,1) to be able to hit the lamp three units to the right...but I really just am not sure how to really start this problem...very confusing, can someone give me a starting point? Thank you very much for any help.

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# Homework Help: Crazy Elliptical shadow problem

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