Solve the equation

5^x = 1.4

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- Jul 30th 2009, 02:59 PM #1

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- Jul 30th 2009, 03:04 PM #2

- Jul 30th 2009, 03:06 PM #3

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- Jul 30th 2009, 03:08 PM #4
$\displaystyle 5^{x}=\frac{7}{5}$ $\displaystyle \Rightarrow$ $\displaystyle ln(5^{x})=ln(\frac{7}{5})$ $\displaystyle \Rightarrow$ $\displaystyle {x}ln(5)=ln(\frac{7}{5})$

So, $\displaystyle x=\frac{ln(\frac{7}{5})}{ln(5)}\approx{0.209062}$

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Didn't mean to delete my work!

- Jul 30th 2009, 03:15 PM #5

- Jul 30th 2009, 03:19 PM #6

- Jul 30th 2009, 04:19 PM #7

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