Difference between revisions of "What is Log"

Revision as of 13:42, 30 September 2021

$log_{a}x=n$

than

$a^{n}=x$

ex1: $log_{4}4=n$ 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 9: / Line 9: @@
 ex1: <math>log_4 4 = n </math> find n.
+<math>log_a x = n </math>
 <math>a^n = x </math>
@@ Line 16: / Line 17: @@
 ====example 2====
-ex1: <math>log_4 x = 2 </math> find x.
+ex2: <math>log_4 x = 2 </math> find x.
+<math>log_a x = n </math>
 <math>a^n = x </math>
@@ Line 23: / Line 26: @@
 x = 16
+====example 3====
+ex3: <math>log_a 25 =2  </math> find x.
+<math>log_a x = n </math>
+<math>a^n = x </math>
+<math>a^2 = 25 </math>
+a = 5