What would stand for in a log equation?

For example ? Is that the same as ?

Thanks!

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- May 2nd 2011, 05:05 PMmathguy20Help With Log Notation
What would stand for in a log equation?

For example ? Is that the same as ?

Thanks! - May 2nd 2011, 05:06 PMe^(i*pi)
- May 2nd 2011, 05:12 PMmathguy20
Thanks for the quick response! Does = 10 is the base if it not stated, just like normal logs?

- May 2nd 2011, 05:17 PMe^(i*pi)
- May 2nd 2011, 05:20 PMmathguy20
Got it -- here's another log question if you don't mind.

How would I solve for x?

- May 2nd 2011, 05:27 PMQuacky
We have:

Can you see why?

So combine logs using the and see if you get anywhere. - May 2nd 2011, 05:36 PMmathguy20
Yeah - so would it be ?

I think I got lost in the base 4, because I've only done those in base 10.

Then, I can just solve for x from . So ? - May 2nd 2011, 05:41 PMQuacky
- May 2nd 2011, 05:43 PMmathguy20
- May 2nd 2011, 05:48 PMQuacky
I am unfamiliar with this exact calculator, but I would expect, if there isn't a button that calculates logs to all bases, that you can, using the change of base rule. If you convert the logs from base 4 to base 10, then you can plug the numbers in. I don't know whether there's a shorthand, my calculator can calculate logs to all bases for me so I don't have to worry.(Cool)

- May 2nd 2011, 08:12 PMbjhopper
Hello mathguy20,

log B4 (4) =1. Bring all terms to LHS.Combine all the log terms to 1 term= to 0.Solve for x

bjh