W=-10(X-100)(X-30)=-10(X^2-130X+3000)=-10(X^2-130X+65^2-65^2+3000)=-10(X-65)^2+12250,∵-10<0,∴当X-65=0,即X=65时,W最大=12250。
标签:10x
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W=-10(X-100)(X-30)=-10(X^2-130X+3000)=-10(X^2-130X+65^2-65^2+3000)=-10(X-65)^2+12250,∵-10<0,∴当X-65=0,即X=65时,W最大=12250。
标签:10x