Difference between revisions of "What is Log"

Revision as of 13:46, 30 September 2021

First law If $log_{a}x=n$ than $a^{n}=x$
Second law If $log_{A}+log_{B}=log_{(}AB)==examples======example1====ex1:<math>log_{4}4=n$ find n.

$log_{a}x=n$ $a^{n}=x$

$4^{n}=4$

n=1

ex2: $log_{4}x=2$ find x.

$log_{a}x=n$

$a^{n}=x$

$4^{2}=x$

x = 16

ex3: $log_{a}25=2$ find x.

$log_{a}x=n$

$a^{n}=x$

$a^{2}=25$

a = 5

@@ Line 1: / Line 1: @@
-<math>log_a x = n </math>
-than
+#First law If <math>log_a x = n </math> than <math>a^n = x </math>
+#Second law If <math>log_A + log_B = log_(AB)
-<math>a^n = x </math>
 ==examples==