lim(x->+2)x^2-4/x-2=多少?书上lim(x->+2)x^2-4/x-2=lim(x->+2) x+2 ,x^2-4/x-2换算到x+2 这是怎么换算的
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数学难题,求指教~~极限到底是什么玩意我还不懂.1.lim(x^2-2x+6)2.lim(x^2-4)/(x-2)3.lim(x^2-6x=8)/(x^-5x=4)4.lim[1/(1-x)-1/(1-x^3)5.lim(sin2x)/x^26.lim(sin5x)/x7.lim(tan3x)/(sin7x)8.lim[(1+x)/x]^2x例如这道例题~lim[(1/3)x+1]
lim(x)lim(x→∞) [(x-1)/(x+1)]^2x 为什么 lim(x->∞) {[(-2)/(x+1)]*2x} = -4
X->2,lim(X^4-16/X-2)=?
1、lim(x->无穷大) e^x arctanx2、lim(x->0)sinx√1+sin(1/x)3、lim(x->无穷大)【(√x^2+x+1)-【(√x^2-x+1)】4、lim(x->无穷大)((x+{x+(x)^0.5]^0.5}^0.5)/(2x+1)^0.55、lim(x->0)(sin3x+x^2sin1/x)/((1+cosx)x)6、lim(n->无穷大)(2^n)(si
lim(x^2+1/x^2-2x)^x=?
lim(x/x-c)^x=2 x趋于无穷
lim(x+1/x+2)^x=?x趋于无穷
lim(x趋于无穷)(x/1+x)^(x+2)=?
lim(2-x)tanπ/4x
lim(x->无穷大)x/(sinx)^2=?
lim(x(sin)^2)
lim~~~数学题lim(x趋近无穷)x+2+lnx/(x-1)=?
lim(4x^3-2x^2+x)/(3x^2+2x)=?(x->0)
设lim(x→0)[f(x)-3]/x^2=100,求lim(x→0)f(x)
高数 极限lim(x->0)arccotx/x =如题 lim(x->0)arccotx/x = lim (x->~) sinx/2x =
lim(1-x)^(2/x) x->0
lim(x趋向于4)(x^2-6x+8)/(x^2-5x+4)
lim(x→∞)(7x^3+4x)/(2x^3-x^2+3)=?