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December 9th, 2013, 07:27 PM   #1
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Intersection of a line and exponential function

So, we're learning logs right now, and I have no idea how to solve this question.

I get here, 40,000+2000n=38500(1.05)^n, I try a bunch of stuff, and I still get it wrong.

http://gyazo.com/75789ac1be3531567f41f582d4db50c9.png


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Tzad
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December 9th, 2013, 08:07 PM   #2
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Re: Intersection of a line and exponential function

You cannot determine an exact solution set using elementary functions. I would recommend using a numeric root finding method to approximate the two roots.

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