已知
是正整数,则实数尥的最大值为
| A.12 | B.11 | C.8 | D.3 |
抛物线y=(x+2) 2+3的顶点坐标是
0 111920 111928 111934 111938 111944 111946 111950 111956 111958 111964 111970 111974 111976 111980 111986 111988 111994 111998 112000 112004 112006 112010 112012 112014 112015 112016 112018 112019 112020 112022 112024 112028 112030 112034 112036 112040 112046 112048 112054 112058 112060 112064 112070 112076 112078 112084 112088 112090 112096 112100 112106 112114 366461
| A.(2,3) | B.(-2,3) | C.(-2,-3) | D.(2,-3) |