Exponential functions through two points

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A couple of examples of how to fit a basic exponential function y = C*a^x through two points in the plane. Goes well with Stewart Calculus section 1.3.
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the best explanation i have ever seen about this subject. thank you, you helped me a lot

geoelectronix
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Thank you for a clear and concise explanation…

acassels
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Nice.  You're taking a square root which gives a=+/-sqr(1/2).  What happens to the negative root ?  nm got it. base > 1 exp growth or 0 < base < 1 exp decay.

josephshaff