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 August 27th, 2016, 02:10 AM #1 Newbie   Joined: Apr 2016 From: uk Posts: 14 Thanks: 0 how is this calculated?? Hi thanks in advance for any help here ive been given this equation $\frac{10}{1000}$ (1-$e^{\frac{12x10^-2}{6x10^-6}}$) does it = 0.01(1-$e^{2000}$) as everything I try comes out as , NaN
 August 27th, 2016, 02:56 AM #2 Senior Member   Joined: Jun 2015 From: England Posts: 915 Thanks: 271 very nearly but not quite. $\displaystyle \frac{{12x{{10}^{ - 2}}}}{{6x{{10}^{ - 6}}}} = \frac{{2x{{10}^{ - 2}}}}{{{{10}^{ - 4}}x{{10}^{ - 2}}}} = \frac{2}{{{{10}^{ - 4}}}} = 2x{10^4} = 20,000$ Note your lettering is very small and hard to read. Please make it bigger next time. Last edited by studiot; August 27th, 2016 at 02:58 AM.
 August 27th, 2016, 03:46 AM #3 Newbie   Joined: Apr 2016 From: uk Posts: 14 Thanks: 0 Woops sorry I meant e^20,000 missed a zero So is the answer simply =0.01(1-e^20000) Last edited by mathmere; August 27th, 2016 at 03:58 AM. Reason: Clarity
 August 27th, 2016, 05:09 AM #4 Senior Member   Joined: Jun 2015 From: England Posts: 915 Thanks: 271 I don't know what the equation is since you have written an expression, not an equation. An equation has an equals sign. But yes, you have now correctly simplified the expression. Please note the correct terminology for the future. Thanks from greg1313 and mathmere

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