Math Question?
2019-08-31 2:38 pm
The distance between the points (x, y) and (-x, y) is( ), where x > 0 and y > 0
回答 (1)
2019-08-31 4:21 pm
Sol
x>0
d^2=[x－(－x)]^2+(y－y)^2=4x^2
d=｜2x｜=2x
x>0
d^2=[x－(－x)]^2+(y－y)^2=4x^2
d=｜2x｜=2x
收錄日期: 2021-04-30 22:50:35
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