1)
边际成本:C(X)对X求导:dC/dX=3+X
2)
收益:R=P*X=100*X^(1/2)
边慰收益:R对X示导:dR/dX=50*X^(-1/2)
3)
利润:R-C=100*X^(1/2)-400-3X-1/2X^2
边际利润:求导得:50*X^(-1/2)-3-X
4)
收益的价格弹性:R=10000/P
(dR/dP)*(P/R)=-10000/P^2*P/(10000/P)=-1
1)
边际成本:C(X)对X求导:dC/dX=3+X
2)
收益:R=P*X=100*X^(1/2)
边慰收益:R对X示导:dR/dX=50*X^(-1/2)
3)
利润:R-C=100*X^(1/2)-400-3X-1/2X^2
边际利润:求导得:50*X^(-1/2)-3-X
4)
收益的价格弹性:R=10000/P
(dR/dP)*(P/R)=-10000/P^2*P/(10000/P)=-1