Asked by sophie
given that ln2=0.7 and ln5=1.6, find:
1) ln(1/25)
2) e^3ln2 - ln5
1) ln(1/25)
2) e^3ln2 - ln5
Answers
Answered by
Steve
ln(1/25) = ln(5^-2) = -2 ln(5)
e^(3ln2) = e^(ln8) = 8
e^(3ln2) = e^(ln8) = 8
Answered by
WALE
steve can you help me out with a question
Answered by
sophie
im confused on how you got 8 for the second problem. may you please explain?
Answered by
Steve
3ln2 = ln 2^3 = ln8
by definition,
e^lnx = x
ln(e^x) = x
ln and e^ are inverse functions
by definition,
e^lnx = x
ln(e^x) = x
ln and e^ are inverse functions
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