老样子 不保证对错
(1) e^(1/24)
(2) -27/250
(3) 2
(4) 31/128
(5) e^3 / 4
(6) 1/32
(7) 2 - pi/2
(8) 2*sqrt(2) - 2*ln[2*sqrt(2) + 3]
(9) (1, 5)
(10) 1 + e^2
(11) e^(-pi/6) + 1/2 + sqrt(3)/2
(12) pi^3 / 2
(13) e^2 - 2
(14) sqrt(3)/6 * ln[(sqrt(3) + 1)/(sqrt(3) - 1)]
(15) ln(5) + 2/5 * x^3 - 2/25 * x^6 (前三非零项)
(16) 1/2! * x + 1/4! * x^3 + 3/6! * x^5 (前三非零项)
(17) sqrt(3) * (e - 1/e)
(18) sqrt(2) / 3
(19) sqrt(17)
(20) sin(1) / 3
(21) (32/3 - 4*sqrt(3)) * pi
(22) 8 * pi - 16
(23) -2
(24) 9/2
(25) 6/5 * pi