(1)
e^x = 1+ x+(1/2)x^2+(1/6)x^3+(1/24)x^4 +o(x^4)
x=1
e ~ 1+ 1+(1/2)+(1/6)+(1/24) ~ 2.7083
(2)
ln(1+x) = x - (1/2)x^2 + (1/8)x^3 - (1/64)x^4 +o(x^4)
ln(6/5)
=ln(1 + 1/5)
=> x=1/5
ln(6/5)
~(1/5) - (1/2)(1/25) + (1/8)(1/125) - (1/64)(1/625)
~0.1810
内容全部来源于网络收集，如有侵权，请联系网站删除!