limx趋近于0 4x^3-2x^2+x/3x^2+2x
limx趋近于0 4x^3-2x^2+x/3x^2+2x
limx趋近于无穷2x^3-x+1
limx趋近于3,x/(x^2-9) 求极限
limx趋近于0sin3x/2x
limx趋近于0 (√(x^2+3X)-√(X^2-2X))
limx趋近于0时2arcsinx/3x
limx趋近于0(sinx/x)^(1/x^2)
limx趋近于-0∫0√x sin(x^2)dx/√(x^3)
lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2
limx趋近于0 x/f(3x)=2,limx趋近于0 f(2x)/x=
已知limx趋近于[6sinx-(tanx)f(x)]/x^3=0 求limx趋近于0[6-f(x)]/x^2
求极限 limx趋近于无穷(x^2-1)/(3x^2-x-1)