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solve each equation or inequality. Round to four decimal places

1. ln(-2x)=7

 Mar 10, 2015

Best Answer 

 #2
avatar+118723 
+5

$$\\ln(-2x)=7\\\\
-2x=e^7\\\\
x=\frac{-e^7}{2}\\\\$$

 

$${\mathtt{\,-\,}}{\frac{{{\mathtt{e}}}^{{\mathtt{7}}}}{{\mathtt{2}}}} = -{\mathtt{548.316\: \!579\: \!214\: \!229\: \!299\: \!6}}$$

.
 Mar 11, 2015
 #1
avatar
+5

$$ln(-2x) = 7$$

By the definition of the natural log,

$$-2x = e^7$$

$$x = -\frac{e^7}{2} \approx 548.32$$

.
 Mar 10, 2015
 #2
avatar+118723 
+5
Best Answer

$$\\ln(-2x)=7\\\\
-2x=e^7\\\\
x=\frac{-e^7}{2}\\\\$$

 

$${\mathtt{\,-\,}}{\frac{{{\mathtt{e}}}^{{\mathtt{7}}}}{{\mathtt{2}}}} = -{\mathtt{548.316\: \!579\: \!214\: \!229\: \!299\: \!6}}$$

Melody Mar 11, 2015

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