【简答题】请每个同学用SWOT工具对自己进行分析,并明确大学三年的努力方向。
【简答题】动点P在x轴与直线l:y=3之间的区域(含边界)上运动,且到点F(0,1)和直线l的距离之和为4, (Ⅰ)求点P的轨迹C的方程; (Ⅱ)过点Q(0,-1)作曲线C的切线,求所作的切线与曲线C所围成区域的面积.
【简答题】动点P在x轴与直线l:y=3之间的区域(含边界)上运动,且到点F(0,1)和直线l的距离之和为4. (1)求点P的轨迹C的方程; (2)过点Q(0,-1)作曲线C的切线,求所作的切线与曲线C所围成区域的面积.
【单选题】通过当前的刀位点来设定加工坐标系的原点,不产生机床运动的指令是
【单选题】已知直线l:3x+4y-12=0,若圆上恰好存在两个点P、Q,它们到直线l的距离为1,则称该圆为“理想型”圆,则下列圆中是“理想型”圆的是 [ ]
【单选题】Dearest Julian and Juliette, You must be back from Africa, I imagine, by now--but meanwhile Africa has come to us, with a vengeance, in a frightful heat wave with temperatures day after day of 105, an...
【简答题】Steven:If it isn't 1 , can I bring it back? Seller:Of course. But you must take care of your receipt. Steven : Can you explainit more to me? Seller: OK. Itcan be 2 ifthere's something wrong with it. R...
【单选题】点Q(-1,1)到直线3x-4y=0的距离是()
【简答题】Complete the following sentences with words or expressions given below. Change the form where necessary. override rigorous attendant compliant perpetual take a back seat...
【单选题】通过当前的刀位点设定加工坐标系的原点,不产生机床运动的指令是( )。