x(t) = (148/3)e^(-6t) + 1(adsbygoogle = window.adsbygoogle || []).push({});

I am trying to find the amount of salt (x) in the tank at time = 40.

Out of interest I checked it out on wolframalpha, and

(148/3)e^(-240) is around 2.67E(-103) SO RIDICULOUSLY SMALL

but as soon as put the 'plus 1' on the end, it someone all simplifies down to 1?

How is that possible................? thanks!

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# How is this simplification possible?

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