Introduction: A function of the form y(x)=alogx,(x>0) where a (a≠1) is a positive number is called a logarithmic function with base a.
Meaning of the logarithmic function with base a:
y(x)=alogx means: to x belongs the y that satisfies ay=x.
Example: For instance y(x)=2logx gives:
2log1=0, since 20=1
2log2=1, since 21=2
2log8=3, since 23=8