(Q14).Logarithmic form of
1
81
 = 3c .

What is Logarithmic form?

The logarithmic form is written as log
c
a
 = b. It is a rearrangement of the exponential form, ab = c. Any exponential equation can be written as a logarithm.
1
81
 = 3c .
1
81
 →
1
2
 → -2 .
Here
1
81
 can be written as -2

9-2 = 3c

b = c

a = 3

c = 9-2

Here a,b,c can be written as per the given formula

log
c
a
 = b (formula)
log
9-2
3
 = c
So, it is log
9-2
3
 = c