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已知二次函数y＝ax2+bx+c（a≠0）的图象如图所示，则下列结论正确的是（ ）
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已知二次函数y=ax2+bx+c的图象如图所示则毛1这个二次函数的解析式为__________2当x
已知二次函数y=ax2+bx+c的图象如图所示则毛1这个二次函数的解析式为__________2当x
已知二次函数y=ax2+bx+ca≠0的图象如图所示则下列结论中正确的是
a＞0
﹣1是方程ax
2
+bx+c=0的一个根
a+b+c=0
当x＜1时，y随x的增大而减小
已知:二次函数y=ax2+bx+c的图象如图所示则ab______0填〉〈或＝
.已知二次函数y=ax2+bx+ca≠0的图象如图所示:1这个二次函数图象的关系式是________
已知二次函数y=ax2+bx+ca≠0的图象如图所示则不等式ax2+bx+c＜0的解集是.
已知二次函数y=ax2+bx+ca≠0的图象如图所示给出以下结论①a+b+c＜0②a－b+c＜0③b
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②③
③④
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二次函数y＝ax2＋bx＋c的图象如图所示则方程ax2＋bx＋c＝0的两根为____________
已知二次函数y=ax2+bx+ca≠0的图象如图所示则以下说法不正确的是
根据图象可得该函数y有最小值
当x=﹣2时，函数y的值小于0
根据图象可得a＞0，b＜0
当x＜﹣1时，函数值y随着x的增大而减小
若二次函数y=ax2+bx+c的图象如图所示则直线y=abx+c不过第_____象限.
二次函数y=ax2+bx+c的图象如图所示当函数值y＜0时自变量x的取值范围是__________.
二次函数y＝ax2＋bx＋c的图象如图所示下列结论错误的是A.ab＜0B.ac＜0C.当x＜2时函数
如图已知一次函数y＝0.5x+2的图象与x轴交于点A.与二次函数y＝ax2+bx+c的图象交于y轴上
已知二次函数y=ax2+bx+ca≠0的图象如图所示则不等式ax2+bx+c＜0的解集是.
已知二次函数y=ax2+bx+ca≠0的图象如图所示给出以下结论①a+b+c＜0②a－b+c＜0③b
①②③
②③
③④
①④
二次函数y＝ax2＋bx＋c的图象如图所示则方程ax2＋bx＋c＝0的两根为____________
已知二次函数y＝ax2a≠0与一次函数y＝kx－2的图象相交于AB两点如图所示其中A－1－1求△OA
已知二次函数y=ax2+bx+cabc是常数图象如图所示则当x满足的条件是
已知二次函数y=ax2+bx+ca≠0的图象如图所示则以下说法不正确的是
根据图象可得该函数y有最小值
当x=﹣2时，函数y的值小于0
根据图象可得a＞0，b＜0
当x＜﹣1时，函数值y随着x的增大而减小
已知二次函数y=ax2+bx+ca≠0的图象如图所示且关于x的一元二次方程ax2+bx+c﹣m=0没
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如图在平面直角坐标系中反比例函数y＝x＞0的图象与正比例函数y＝kxy＝xk＞1的图象分别交于点AB．若∠AOB＝45°则△AOB的面积是．
在平面直角坐标系xOy中已知点MN的坐标分别为﹣1221若抛物线y＝ax2﹣x+2a≠0与线段MN有两个不同的交点则a的取值范围是
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计算题 1先化简再求值﹣m﹣n÷m2其中m﹣n＝． 2计算2sin30°﹣π﹣0+|﹣1|+﹣1
如图在平面直角坐标系中△ABC△A1B1C1△A2B2C2△A3B3C3…△AnBn∁n都是等腰直角三角形点BB1B2B3…Bn都在x轴上点B1与原点重合点AC1C2C3…∁n都在直线ly＝x+上点C在y轴上AB∥A1B1∥A2B2∥…∥AnBn∥y轴AC∥A1C1∥A2C2∥…∥An∁n∥x轴若点A的横坐标为﹣1则点∁n的纵坐标是．
如图在平面直角坐标系中矩形OABC的边BC交x轴于点DAD⊥x轴反比例函数y＝x＞0的图象经过点A点D的坐标为30AB＝BD． 1求反比例函数的解析式 2点P为y轴上一动点当PA+PB的值最小时求出点P的坐标．
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6﹣的整数部分是．
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不等式组的最小整数解是．
关于x的一元二次方程x2﹣k+3x+k＝0的根的情况是
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