... xn<110nlim xn= x •1, 000 ···=0, 999 ··· 0, 5=0, 4999 ···•12=0, 5 ,13=0, 333 ··· , 0, 123 12 3123 ···= 123 ×1103− 1RX, YX Yn {1, 2, ··· ,n}NN → X X2N, Z, QRa, b ∈ R a = b [a, b][a, ... a111.2+12.3+13.4+14.5+15.6+ ···11.4+14.7+17.10+110.13+ ···11.3+14.6+17.9+110 .12 +113.15+ ···12−14+18−116+132+ ···∞k=02k+3k6k∞k=0(1 − x1+x)k∞k=0(√k ... x)pf(n)(x) f(x)=1x2− 3x +2f(x)x0f(x)=xnx =0 f(x)=(1+x)n4 P (2) = −1,P(2) = 0,P(2) = 12, P(2) = 24a>0,h>0,n∈ N θ ∈ [0, 1]1a + h=1a−ha2+h2a3+ ···+(−1)n−1hn−1an+(−1)nhn(a...