Q表示产量,成本C(Q)=100+13Q，单价p，需求量Q(p)=800/P+3-2则工厂取得利润最大时的产量为_____
Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
f(x,y)=y根号1-x2+sf(x,y)dxdy其中D=（x,y），则
________they'vegottoknoweachotheralittlebetter,theygetalongjustfine.
行列式
