lim(x趋近于2)x^2-4/x^-3x+2
求lim((2x^2+x-4)/3x^3-x^2+1),X趋近于无穷大时的值
求极限lim(x趋近于2)(ln(x^2-3)/(x^2-3x+2))
lim(tan^3(3x)/(X^2sin(2x))(x趋近于0)
求极限 lim(2^x+3^x -2)/x 当X趋近于0
求极限 x趋近于0 lim[(4^x-5^x)/2]^1/x
求极限x趋近于无穷,lim(x^2*arcsin1/x)/4x-1
lim(x趋近于0)[sin6x+xf(x)]/x^3=0,则lim(x趋近于0)[6+f(x)]/x^2=?
lim(cosx)^cot^2x当x趋近于0
求极限lim(x趋近于2)(ln(x^2-3)/(x^2-3x+2)) 为什么最后为4
lim(1/(x^2-x)+2/(x^2-x)) x趋近于0
lim (sqrt(x+2)-sqrt(x))/(sqrt(x+1)-sqrt(x)) (X趋近于正无穷)
lim(x趋近于0) 【(sinx+2x)÷(2tanx+3x)】咋做