Question

Find ln (-91.48)

A. 4.5161

b. i pi - 4.5161

C. i pi +4.5161

Answer 1

@amistre64 Sorry, if I'm tagging you too much, but no one is helping me on here besides you.

Answer 2

log?

Answer 3

oh i see a complex log
use a calculator
you will get C because it is always C

Answer 4

http://www.wolframalpha.com/input/?i=log%28-91.48%29

Answer 5

yes

Answer 6

ln(-1) = pi*i

where i = sqrt(-1)

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ln(-91.48) = ln(-1*91.48)

ln(-91.48) = ln(-1) + ln(91.48)

ln(-91.48) = pi*i + 4.51612