Using FindFit to fit $a\,b^t$: how to avoid introducing complex numbers? Hi David, thanks for the help! When I plot the curve: Plot[a*b^t /. {a -> 100.01244, b -> 0.000045146}, {t, 0, 0.1}] using the non-negative exponent with the values of a and b given, it appears to match the data pretty well. :-)
Equation of a line that is tangent to a curve at point Thanks J.M.! The code I posted follows the approach taught in calculus texts. I wouldn't mind seeing an improved version of that approach as well (from anyone here).
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