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- 2若a=2011,当b、c为何值时,a2+b2+c2有最小值,最小值时多少?.
- 3函数f(x)对任意m,n∈R,都有f(m+n=f(m)+f(n)-1,并且当x大于0,f(x)大于1
- 4she works to the supermarket____the park填介词,
- 5二次函数y=-2(x-3)2+8图象的顶点为A,若此二次函数图象与x轴交于B、C两点. (1)求三角形ABC的面积; (2)若点P是抛物线上x轴上方任意一点,且满足S△PBC=3/4S△ABC,求P点的坐标.
- 6一物体做匀加速直线运动4s,前2s走8m,后2s走12m,则( )
- 7I called you yesterday,but no one answered.( I called you because I'll have a party
- 8standing in the empty dreams terminal suddenly miss you very much.什么意思……
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