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यदि `(log_(3) x)^(2) + (log_(3) x) lt 2` हो , तो निम्नलिखित में से कौन- सा सही है ?A. ` 0 lt x lt 1/9`B. ` 1.9 lt x lt 3`C. ` 3 lt x lt infty`D. ` 1/9 le x le 3` |
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Answer» Correct Answer - B `(log_(3) x)^(2) + (log _(3) x) lt 2` ` rArr (log_(3) x)^(2) + (log_(3) x) - 2 lt 0` ` rArr (log_(3) x + 2) (log_(3) x -1) lt 0` ` rArr -2 lt log_(3) x lt 1` ` rArr 1/9 lt x lt 3` |
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