Function (easy one)...

f(x) = log { log|sin x|(x2-8x+23) - 3log2|sin x| }

Find the domain of this function.

3 Answers

3
Swastika dutta ·

well...I am having doubt in one step...

Here f(x) is defined if,

log|sin x| (x2-8x+23) - 3log2|sin x| > 0

log|sin x| (x2-8x+23) - 3log|sin x|2 >0

log|sin x|(x2-8x+238) >0

It's in the 3rd step..

how is '8' coming in the denominator??????

plz explain..

13
Avik ·

3log|sin x|2 = log|sin x|23

Then, simply ...log(a)-log(b) = log(a/b)

3
Swastika dutta ·

sorry.. actually I did 32...Silly mistake!!

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