limX趋近无穷 x^2-1/2x^2-x
问题描述:
limX趋近无穷 x^2-1/2x^2-x
答
limX趋近无穷 x^2-1/2x^2-x
=分子分母同除以x²,得
limX趋近无穷 (1-1/x²)/(2-1/x)
=limX趋近无穷1/2
=1/2