given that ln2=0.7 and ln5=1.6, find:

1) ln(1/25)

2) e^3ln2 - ln5

4 answers

ln(1/25) = ln(5^-2) = -2 ln(5)

e^(3ln2) = e^(ln8) = 8
steve can you help me out with a question
im confused on how you got 8 for the second problem. may you please explain?
3ln2 = ln 2^3 = ln8

by definition,
e^lnx = x
ln(e^x) = x

ln and e^ are inverse functions