Math, asked by riyajhurani12, 1 year ago

log(x+1) + log(x-1) = log 24

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Answers

Answered by meenakshi997sa

hope it helps you...
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Attachments:

Tamash: But here -5 can't be taken....

meenakshi997sa: why??

shashankavsthi: because -5 is not in domain

meenakshi997sa: ☺✌☺

meenakshi997sa: got it...

shashankavsthi: log(x-1)...if we put x=-5...then it will become log(-6) whic is not possible

meenakshi997sa: thanks...☺

shashankavsthi: welcome!!

meenakshi997sa: I m Meenakshi....

Answered by Tamash

Hey mate here is ur query....

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log {(x+1)(x-1)} =log 24

As logA+logB = logAB

log {x²-1}= log 24

or x²-1 =24 As taking log on both sides

or x²= 25

or x=±5

But as we take the value of x under log so

x=5
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Hope this will help you...

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