The number of points on the real line where the function f(x) =logx2-1 x-3 is not defined is
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answer is 6.
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Detailed Solution
logx2-1 x-3 is defined when x-3≠0 andx2-1 >0 and x2-1≠1 x≠3, x2-1≠0 , x≠1 or -1x2-1≠1 ⇒x≠-2 or 2 and x≠0 ∴ the points at which the function is not defined are x=0,1,-1,-2 , 2,3