+0  
 
0
50
2
avatar+28 

Simplify the expression 

2log4x

 May 2, 2020
 #1
avatar+657 
0

The calculator said this...  

log49

 

coolsmileycool

 May 2, 2020
 #2
avatar+111329 
+1

2 log 4x

 

Note  that  we can write   2  as  (4)^(1/2)

 

So we have

 

[ 4 ^(1/2)]^(log 4 x)  =

 

4 ^ [ (1/2) log 4 x ]   =      [ remember that   a log b   =  log b a  ]

 

4^ [ log 4 x 1/2 ]   =        [   remember that    a ^ [ log a b ]   =  b   ]

 

x1/2  =

 

√x

 

cool cool cool

 May 2, 2020

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