Can someone explain to me why ln e^5 equals 5?

3 answers

ln 2.7185 = ln 148.413 = 5
ln (e^5 )= 5 ln e
but ln e = 1
so ln (e^5) = 5*1 = 5
How do you solve 4 to the power of 2-6x = 812? I can't find a common number that raised to a power equals 812.