Question 129426
When you see an equation like:
{{{b^y = x}}} you can write the equivalent in "log form" as:
{{{Log[b](x) = y}}} where b = the base of the logarithm.

Applying this to your problem:
{{{3^x = y}}} can be written in "log form" as: {{{Log[3](y) = x}}}
These two forms are equaivalent.
The first one: {{{3^x = y}}} is called the "exponential form"
The second one:{{{Log[3](y) = x}}} is called the "log form"