sin(1-x)/x^2-4x+3 lim趋向1

lim(x趋向0)ln(1+sin x)/x^2 sin(1-x)/x^2-4x+3 lim趋向1 x趋向于无穷时 lim (3x-1)/(x^3 乘以 sin(1/x^2 )) lim(x趋向正无穷)[x]*sin(1\x)=? lim(x趋向无穷)[1-(2/x)]^3x lim（x-3/x+1）^x lim趋向无穷大 导数计算问题lim x趋向无穷[(x-3)(2x^2+1)]/(2-7x^3)lim x趋向4 [e^x+cos(4-x 求极限 lim(x趋向无穷)[(x+1)^(x+1)/x^x]sin(1/x) 求lim [sin(x^2-1)]/(x-1) x趋向于1的极限. 求极限lim(x趋向于0)ln(1+x^2)/sin(1+x^2) 求lim x趋向无穷 sin(x+1)/x^2的极限 求极限 （1） x趋向x/6 lim ln(2cos2x) (2) x趋向0 lim(e^x-1)/x (3) x趋向0