nick2113ww nick2113ww
  • 09-04-2018
  • Mathematics
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altavistard
altavistard altavistard
  • 12-04-2018
Combine ln 24 - (1/2)ln 9:  That comes out to  ln 24 - ln sqrt(9) = ln 24 - ln 3, which in turn is equal to ln 24/3, or ln 8.

Then ln (k^2 - 1) = ln 8, and  so  k^2 - 1 = 8,   k^2   = 9   and 

k = plus or minus 3. 
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