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solve In(1)-7 without calculator, showing steps (please and thank you?)

 Jul 20, 2014

Best Answer 

 #2
avatar+33654 
+10

ln(1) is 0  (in fact logb(1) is zero, whatever the base, b, is because b0 = 1; and when logb(x)=y, this means, by definition, that by = x.  In your case b = e, x = 1 and y = 0).  You should be able to do the rest.

 Jul 20, 2014
 #1
avatar+130466 
+10

The ln of 1 = 0

So, 0 - 7  = -7

 Jul 20, 2014
 #2
avatar+33654 
+10
Best Answer

ln(1) is 0  (in fact logb(1) is zero, whatever the base, b, is because b0 = 1; and when logb(x)=y, this means, by definition, that by = x.  In your case b = e, x = 1 and y = 0).  You should be able to do the rest.

Alan Jul 20, 2014

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