y=根号x 的图像是怎样的?
y=√x图像,其中x≥0,y≥0
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拓展资料
y=x²的图像是开口向上的抛物线;
以(0,0)为顶点,Y轴为对称轴,同时经过点(-1,1)(1,1)
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y=2x的图像,正比例函数的图象是一条经过原点的直线,且当k>0时,经过一、三象限。
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x=y*y,相当于关于y的二次函数。我们习惯的的关于x轴的二次函数,开口向上或是向下,关于Y的二次函数,开口就左还是向右了。
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