2、中A必须试种,则不同的试种方法有种(用数字做答)(6)曲线的渐近线三.解答题(7)求经过两直线的交点,且垂直于直线的直线方程。测试(一)答案一.(1)。A(2)。D(3)。A二.(4)。-12(5)。18(6)。三.解:解方程得直线的斜率为3。所求直线的斜率为于是所求直线为即一、单项填空1.—Theroomissodirty. wecleanit? —Ofcourse. A.Will B.Shall C.Would D.Do2.—Did you notice
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