如果lim(x趋于无穷)=((2x^2+5)/(x-1)+ax+b)=3,a=?,b=?
1个回答
lim(x趋于无穷)=((2x^2+5)/(x-1)+ax+b)
=(2x²+5+ax²-ax+bx-b)/(x-1)
=3
所以2+a=0;b-a=3;
a=-2;b=1;
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