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प्रश्न
If f(x) = x.log.x then its maximum value is ______.
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उत्तर
If f(x) = x.log.x then its maximum value is `bbunderline((-1)/"e")`.
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Then the total price of x chairs = p·x = (2x2 - 12x- 192)x
= 2x3 - 12x2 - 192x
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