lim(x→∞) (5X^2-51)/(9X^2-19)
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→∞)[(a x^2)/x+1]+bx=lim(x→∞)(a x^2)+bx(x+1) / x+1=lim(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
求极限lim(x→∞)[(2x+5)/(2x+3)]^(x+1)
lim.2x³-x²+9 ------ x→∞ 3x³+1
lim(x→-∞)[(√(x+2)(x+5))+x]=__.
lim(√(4x²-8x+5)+2x+1),x→-∞怎么解?
lim(x→∞)[(X^2+2x+5)/(4x^2-x+1) =(1+2/x+5/x^2)/(4-1/x+1/x^2)=
lim x(x+2)/x^2 (x→oo)
1.4求极限lim(x→∞) (x^2+x)/ (x^4-3x^+1)
lim(x→∞)(x^2+x)/(x^4-3x-1)的极限