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March 26, 2017

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In my textbook, there's an equation with log
ex.
log(50,000)+log(150,000)= some number

But when I use the log button on the calculator, the answer is not correct? But when I use the ln button, it's the correct answer?

So for log, you press ln, then what is the log button on the calculator for?

  • Math - ,

    It is not clear to me above what is the base of the log. Unstated, we often use base 10, but not always. I am not certain what you are doing. But the point of the above is something else..

    log Y + log x= log (x*Y)
    so log(5*1.5*10^9)=9log(7.5)

  • Math - ,

    the equation in my book is

    0.5log(50,000)+0.5log(150,000)=11.37

    I just punch these numbers and using log button on my calculator, the answer isn't correct. But when i use ln instead of log on my calculator, the answer is correct.

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