Exponentrial forms of Logarithms

The exponential form of log₇ 49  =  2  is  7² = 49.
The 7 in log₇ 49 is called the base. The base must be greater
than zero but cannot equal one.
Therefore the base could be .12, 3, 4, 8, 10 etc. The most common base
is 10 and 2.7182. The latter is called "e"
       e is an irrational number and e = 2.718281828...
So we have log₁₀ and log_e as the most common logs.

log₁₀ occurs so frequently that we write it as  log 
without the base and it is called the common logarithmic function.

log_e occurs so frequently that we call it the natural log and write it as ln.
So log₁₀ = log and log_e  = ln

1. What is the exponential form of  log 1000  = 3?   answer

2. What is the exponential form of  ln 25  = 3.218876825?   answer

3. What is the exponential form of  log₇ (1/49)  = -2?   answer

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