设点(x,y)
依题意有:
xy=5,x^2+y^2=25
解得有:
x+y=+/-根号35,xy=5
方程有a^+/-根号35a+5=0
方程有四个解,所以符合条件的点有四个.
点P在函数Y=12/X的图像上,它到原点的距离为5,那么符合条件的P点的个数是
点P在函数Y=12/X的图像上,它到原点的距离为5,那么符合条件的P点的个数是
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数学人气:980 ℃时间:2019-11-20 11:30:57
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