lim(x→∞)(x+2/x-2)^2x=?

lim(x→∞)[(a x^2)/x+1]+bx=lim(x→∞)(a x^2)+bx(x+1) / x+1=lim(x 几道求极限的高数题,lim1/x(tanπx/(2x+1)) x→∞lim x(x^x-1)x→0+lim(x^x^x- lim(x→∞)[sinx/x+xsin(1/2x)] 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限 lim x(x+2)/x^2 (x→oo) lim(x^2+1/x^2-2x)^x=? lim(x→-∞)[（√（x+2）(x+5)）+x]=__. 求极限 lim [(3+x)/(6+x)]^[(x-1)/2]= x→∞ 极限lim(x→∞)[(1+x)/x]^2x= lim(x→∞)[(X^2+2x+5)/(4x^2-x+1) =(1+2/x+5/x^2)/(4-1/x+1/x^2)= lim(x->0)x/(sinx)^2=? 1.4求极限lim(x→∞) (x^2+x)/ (x^4-3x^+1)