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Mon 11 Jul, 2005 04:37 pm
I came across a crazy log equation that I have never seen before.
Here is the question: SOLVE FOR X
log_2 (x^2 + 1) - log_4 (x^2) = 1
HINT: Change (log_4 (x^2) to base 2
Maybe someone can start by teaching me how to change to base.
What exactly does it mean to change to base 2?
log_b(a) = log_c(a) / log_c(b)
How?
How do I apply this formula to change from one base to another?
substitute for a, b, and c
For example, to switch from base 4 to base 2:
log_4(16) = log_2(16) / log_2(4)