Sat数学题疑问The function f has the property that f(a) =f(b) for
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Sat数学题疑问
The function f has the property that f(a) =f(b) for all numbers a and b .What is the graph of y=f(x)in the xy-plane?
A.A line with slope 0
B.a parabola symmetric about the y-axis
B哪里错了?
The function f has the property that f(a) =f(b) for all numbers a and b .What is the graph of y=f(x)in the xy-plane?
A.A line with slope 0
B.a parabola symmetric about the y-axis
B哪里错了?
parabola是抛物线的意思,因为f(a) =f(b) ,而且是for all numbers a and b,所以the function f(x)=常数
所以常数在图像上是一条直线并不是抛物线.
再问: 可他说的是跟y轴对称的抛物线。
再答: 嗯,明白就好。
所以常数在图像上是一条直线并不是抛物线.
再问: 可他说的是跟y轴对称的抛物线。
再答: 嗯,明白就好。
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