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第1737题:有趣的函数图形



ABCD四个选项是打乱后的以下四个函数的图形:


x2+y2=8+sin(xy)x^2+y^2=8+\sin(xy)


x2+y2=6+sin(xy)x^2+y^2=6+\sin(xy)


x2+y2=4+sin(xy)x^2+y^2=4+\sin(xy)


x2+y2=2+sin(xy)x^2+y^2=2+\sin(xy)


其中哪个图形是函数 x2+y2=6+sin(xy)x^2+y^2=6+\sin(xy) 的?



A.

B.

C.

D.


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