
Landon B.
asked 10/17/23If ln(a)=2, ln(b)=3, and ln(c)=5, evaluate the following. ln[(sqrt)(b^2)(c^2)(a^-2)]
2 Answers By Expert Tutors
Ariel B. answered 10/17/23
Honors MS in Theoretical Physics 10+ years of tutoring Calculus
Hi Landon,
Use just two general rules:
1. ln(xa)=aln(x) [a can be any real number (let's leave complex logarithms aside)]
2. ln(xy)=ln(x)+ln(y)
Those two rules would allow you to solve all problems on logarithms of powers and products

Kevin P. answered 10/17/23
Graduate Student in Statistics with 10 years of Tutoring experience
Hello Landon,
For this question, I highly recommend you move forward with using log properties such as:
ln(a*b) = ln(a) + ln(b)
ln(a/b) = ln(a) - ln(b)
ln(a^b) = b*ln(a)
For your specific problem, you will look towards expanding it using a combination of the properties I listed above as it is currently in condensed form. Please let me know if you any further questions!
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William W.
what is under the square root? Is it supposed to be ln[sqrt(b^2c^2a^(-2))]? If so, simplifying would give you ln(bc/a), is that correct?10/17/23