求下列各极限 lim(x,y)→(0,1) (2-xy)/(x^2+2y)
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求下列各极限lim(x,y)→(0,1)(2-xy)/(x^2+2y)求下列各极限lim(x,y)→(0,1)(2-xy)/(x^2+2y)求下列各极限lim(x,y)→(0,1)(2-xy)/(x^
求下列各极限 lim(x,y)→(0,1) (2-xy)/(x^2+2y)
求下列各极限 lim(x,y)→(0,1) (2-xy)/(x^2+2y)
求下列各极限 lim(x,y)→(0,1) (2-xy)/(x^2+2y)
f(x,y)=(2-xy)/(x²+2y),这是一个初等函数,初等函数在定义域内均连续,而(0,1)显然是定义域内的点,因此连续,因此可直接算函数值就行了.
lim(x,y)→(0,1) (2-xy)/(x^2+2y)=f(0,1)=2/2=1
求下列各极限 lim(x,y)→(0,1) (2-xy)/(x^2+2y)
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