Question

Evaluate the logarithmic expresión log5 100

Answer 1

Rewrite the logarithmic expresión log5 (100) using the change of base formula, which gets you: 
log(100)/log(5)

Logarithm base 10 of 100 is 2. 
2/log(5)

The result can be shown in both exact and decimal forms.
Exact Form:
2/log(5)
Decimal Form:
2.86135311...