本课配套习题挑战模式1/5
单选题
难度系数:
1.二次函数y=x2的图象的开口方向是( )
A: 向上 |
B: 向下 |
C: 向左 |
D: 向右 |
一次做对,真牛!
+5奖励规则>
- 提示1:55Sx5oqb54mp57q/6Kej5p6Q5byP5Y+v55+l77yM5LqM5qyh6aG557O75pWwYT0x77yeMO+8jOWPr+efpeaKm+eJqee6v+W8gOWPo+WQkeS4iu+8jg==
- 答案:QQ==
6Kej77ya4oi15LqM5qyh5Ye95pWweT14PHN1cD4yPC9zdXA+55qE5LqM5qyh6aG557O75pWwYT0x77yeMO+8jDxicj7iiLTmipvniannur/lvIDlj6PlkJHkuIrvvI48YnI+5pWF6YCJQe+8jg==
本课配套习题挑战模式2/5
单选题
难度系数:
2.二次函数y=
x2的图象的顶点坐标是( )

A: (1,0) |
B: (0,0) |
C: (-1,0) |
D: (0,![]() |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5LqM5qyh5Ye95pWw55qE5oCn6LSo77yM5Yip55So6aG254K55byP55u05o6l5b6X5Ye66aG254K55Z2Q5qCH5Y2z5Y+v77yO
- 答案:Qg==
6Kej77ya4oi15LqM5qyh5Ye95pWweT08aW1nIHdpZHRoPTcgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvODAvMDYvckJBQ0oxVnhTQ1dnazlFZkFBQUJKSHY5VGJBMzUwLnBuZyI+eDxzdXA+Mjwvc3VwPu+8jDxicj7iiLTkuozmrKHlh73mlbB5PTxpbWcgd2lkdGg9NyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC84MC8wNi9yQkFDSjFWeFNDV2drOUVmQUFBQkpIdjlUYkEzNTAucG5nIj54PHN1cD4yPC9zdXA+5Zu+6LGh55qE6aG254K55Z2Q5qCH5piv77ya77yIMO+8jDDvvInvvI48YnI+5pWF6YCJQu+8jg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.当ab>0时,y=ax2与y=ax+b的图象大致是( )
A: ![]() |
B: ![]() |
C: ![]() |
D: ![]() |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u6aKY5oSP77yMYWLvvJ4w77yM5Y2zYeOAgWLlkIzlj7fvvIzliIZh77yeMOS4jmHvvJww5Lik56eN5oOF5Ya16K6o6K6677yM5YiG5p6Q6YCJ6aG55Y+v5b6X562U5qGI77yO
- 答案:RA==
6Kej77ya5qC55o2u6aKY5oSP77yMYWLvvJ4w77yM5Y2zYeOAgWLlkIzlj7fvvIw8YnI+5b2TYe+8njDml7bvvIxi77yeMO+8jHk9YXg8c3VwPjI8L3N1cD7kuI7lvIDlj6PlkJHkuIrvvIzov4fljp/ngrnvvIx5PWF4K2Lov4fkuIDjgIHkuozjgIHkuInosaHpmZDvvJs8YnI+5q2k5pe277yM5rKh5pyJ6YCJ6aG556ym5ZCI77yMPGJyPuW9k2HvvJww5pe277yMYu+8nDDvvIx5PWF4PHN1cD4yPC9zdXA+5LiO5byA5Y+j5ZCR5LiL77yM6L+H5Y6f54K577yMeT1heCti6L+H5LqM44CB5LiJ44CB5Zub6LGh6ZmQ77ybPGJyPuatpOaXtu+8jETpgInpobnnrKblkIjvvIw8YnI+5pWF6YCJRO+8jg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.
若函数y=axa2−2 是二次函数且图象开口向上,则a=( )
A: -2 |
B: 2 |
C: 2或-2 |
D: 1 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+57O75pWw5LiN5Li6MO+8jOaMh+aVsOS4ujI8L3A+
- 答案:Qg==
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