+0  
 
0
871
1
avatar

what is x 5^x=17

 Jun 1, 2015

Best Answer 

 #1
avatar+33661 
+5

Take logs of both sides

 

log(5x) = log(17)

 

Use the property of logarithms that states log(ab) = b*log(a)

x*log(5) = log(17)

 

x = log(17)/log(5)

 

$${\mathtt{x}} = {\frac{{log}_{10}\left({\mathtt{17}}\right)}{{log}_{10}\left({\mathtt{5}}\right)}} \Rightarrow {\mathtt{x}} = {\mathtt{1.760\: \!374\: \!427\: \!722\: \!587\: \!7}}$$

.

 Jun 1, 2015
 #1
avatar+33661 
+5
Best Answer

Take logs of both sides

 

log(5x) = log(17)

 

Use the property of logarithms that states log(ab) = b*log(a)

x*log(5) = log(17)

 

x = log(17)/log(5)

 

$${\mathtt{x}} = {\frac{{log}_{10}\left({\mathtt{17}}\right)}{{log}_{10}\left({\mathtt{5}}\right)}} \Rightarrow {\mathtt{x}} = {\mathtt{1.760\: \!374\: \!427\: \!722\: \!587\: \!7}}$$

.

Alan Jun 1, 2015

0 Online Users