Sketch Curve: Help Solve y=0 | Stephen

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The discussion revolves around solving the equation for y=0 in the context of a sketch curve problem. Stephen initially struggles to find the roots but receives guidance to use the online grapher tool at Walter Zorn's Grapher. After determining the coordinates of stationary points and analyzing the behavior of the function as x approaches infinity, he concludes that the root is approximately 3.14, eliminating the need for factorization.

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http://img215.imageshack.us/img215/1555/question10.png

I have done 10)a), but b), I just can't figure it out. I am trying to find at what points y=0, but I just can't do it.

I hope someone can help me.

Thank you,
Stephen.
 
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You've asked in the introductory physics forum rather than the math one, so you must expect to get a practical answer rather than a nice mathematical one! I suggest you type it into the grapher at
http://www.walterzorn.com/grapher/grapher_e.htm
and it will show you where the zero is.
 
Turns out. I didn't need it. After I figured out the co-ords of the two stationary points and what happens when X gets inf and -inf then I could see what the roots were and according two the graphics I drew it's about 3.14 so I am pretty sure I didn't have to factorise that damned equation.
 

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