判断下面一道式子的对错!
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/13 11:18:33
判断下面一道式子的对错!
【y= -(1/2)x²-x+3】
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1:
y=-1/2(x²-2x-6)
y=-1/2(x²-2x+1-1-6)
y=-1/2(x-1)²+2/7
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2:
y= -1/2(x²+2x)+3
y=-1/2(x²+2x+1-1)+3
y=-1/2(x+1)²+3.5
【y= -(1/2)x²-x+3】
-----------------------------------------------
1:
y=-1/2(x²-2x-6)
y=-1/2(x²-2x+1-1-6)
y=-1/2(x-1)²+2/7
-----------------------------------------
2:
y= -1/2(x²+2x)+3
y=-1/2(x²+2x+1-1)+3
y=-1/2(x+1)²+3.5
![判断下面一道式子的对错!](/uploads/image/z/19925152-16-2.jpg?t=%E5%88%A4%E6%96%AD%E4%B8%8B%E9%9D%A2%E4%B8%80%E9%81%93%E5%BC%8F%E5%AD%90%E7%9A%84%E5%AF%B9%E9%94%99%21)
第二种做法对