calculation

Quote:

how can i calculate ln(9*10^-5)?

ln(ab) = ln(a) + ln(b)
ln(a ^b) = b ln(a)

ln(9*10 ^-5) = ln(9) + (-5ln(10)) = ln(9) - 5ln(10)

Rom:

Quote:

how can i calculate ln(9*10^-5)?

ln(ab) = ln(a) + ln(b)
ln(a ^b) = b ln(a)

ln(9*10 ^-5) = ln(9) + (-5ln(10)) = ln(9) - 5ln(10)

OR you could just put it straight into your calculator.

ln(9 exp -5)=