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Otupaul
Questions (1)
Intergrate x^-x
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Answers (1)
Let the original price of an item be x Let the number of items be y (x+5)(y-2)=200...(i) xy=200..(ii) y=200/x..(iii) From (i) xy-2x+5y-10=200..(iv) Substitute (iii) in (iv) x(200/x)-2x+1000/x-210=0 200-210-2x+1000/x=0 -10-2x+1000/x=0 -10x-2x²+1000=0
