SOLUTION: ln(y-6)=ln(y+6)+ln4

Question 40982: ln(y-6)=ln(y+6)+ln4
Found 2 solutions by psbhowmick, stanbon:
Answer by psbhowmick(878) (Show Source): You can put this solution on YOUR website!
ln(y-6) = ln(y+6) + ln4
or ln(y-6) - ln(y+6) = ln4
or
Therefore
or [by componendo and dividendo]
or
or y = -10

This is impossible because then (y+6) and (y-6) become negative and logarithm of negative number is undefined. I think you have copied the problem wrongly. Instead of what you have written the question should be ln(y-6) = ln(y+6) - ln4. Then y = 10.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
ln(y-6)=ln(y+6)+ln4
ln(y-6)=ln4(y+6)
Take the anti-ln of both sides to get:
y-6=4y+24
-3y=30
y=-10
This is a meaninless answer because there
is no ln of negative numbers which is what
you would have if you substituted this value
into the original equation.
Conclusion: No solution
cheers,
Stan H.
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