+0  
 
0
69
1
avatar

How do you solve log by hand? Please explain really simple. Thanks!

Guest Feb 21, 2017
Sort: 

1+0 Answers

 #1
avatar+90548 
0

The most important thing to understand is that log is a power (or an indice)

 

If you can remember this one it will help a lot.  You can substitute other values in and use it for other questions.

 

\(log_{10}100=2\\ because\\ 10^2=100\)

 

Other than that you just have the log laws to learn

 

\(log_bX+log_bY=log_b(XY)\\ log_bX-log_bY=log_b(\frac{X}{Y})\\ log(X^y)=ylog(X)\\ \text{And the change of base law:}\\ log_bX=\frac{log_aX}{log_ab} \)

Melody  Feb 21, 2017

15 Online Users

avatar
avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details