y=(x^2-1)/(x^2-3x+2) 函数的间断点及其类型答:y=(x^2-1)/(x^2-3x+2)=(x+1)/(x-2),且x≠1; x=2是不可去间断点,x=1是可去间断点.x为什么不等于1?
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函数,y=3x/(x^2+x+1) ,x
函数y=3x/(x^2+x+1) (x
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