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Question

If (log10x1)(ex3)0, then difference between greatest and smallest integral value satisfying the inequality is

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Solution

(log10x1)(ex3)0, which is possible in following two cases.

Case 1:log10x10 & ex3<0
log10x1 & ex<3
x10 & x<ln3
xϕ

Case 2:log10x10 & ex3>0
log10x1 & ex>3
x10 & x>ln3
x(ln3,10]
And 1<ln3<22[x]10
[x]min=2 & [x]max=10difference=102=8.



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