How do you evaluate #log_9 729#?
When I write
Typically we use sensible bases for logarithms such as
But with your problem we have
And thus if
In log form, the question being asked is :
"To what power must 9 be raised to equal 729?"
It really is a huge advantage to know all the powers up to 1,000 by heart.
In this case you will recognize
Without knowing this, you will have to do the whole log route...
#xlog9 = log729+
It really is easier to just learn them!