+0  
 
0
759
1
avatar

I've been having trouble with this question.

Expand as the sum of the individual logarithms, each of whose argument is linear?:

$${{log}}_{{\mathtt{5}}}{\left({\frac{{\mathtt{24}}{\mathtt{\,\times\,}}{\sqrt[{{\mathtt{3}}}]{{{\mathtt{x}}}^{{\mathtt{4}}}{\mathtt{\,\times\,}}{{\mathtt{y}}}^{{\mathtt{5}}}}}}{{{\mathtt{z}}}^{-{\mathtt{2}}}}}\right)}$$

 May 29, 2014

Best Answer 

 #1
avatar+130511 
+8

We can write this as

log5 ( 24z2 * x4/3 y5/3).......and by a log property we can write

log5 ( 24z2 )  +  log5 ( x4/3 y5/3 ) .......and by applying the property again, we have

log5(24)   +  log5 (z2)  +   log5(  x4/3 ) +   log5 ( y5/3 )... .....we can simpify it further using another log property.....

log5(24)  + 2 log5 (z)    + (4/3) log5 (x)  + (5/3) log5 (y) ......this is linear (without exponents)......

(Using the "change of base" rule, you could write the first term as a decimal approximation, but I might just keep it as is)

 May 29, 2014
 #1
avatar+130511 
+8
Best Answer

We can write this as

log5 ( 24z2 * x4/3 y5/3).......and by a log property we can write

log5 ( 24z2 )  +  log5 ( x4/3 y5/3 ) .......and by applying the property again, we have

log5(24)   +  log5 (z2)  +   log5(  x4/3 ) +   log5 ( y5/3 )... .....we can simpify it further using another log property.....

log5(24)  + 2 log5 (z)    + (4/3) log5 (x)  + (5/3) log5 (y) ......this is linear (without exponents)......

(Using the "change of base" rule, you could write the first term as a decimal approximation, but I might just keep it as is)

CPhill May 29, 2014

1 Online Users

avatar