from sympy import *
x = symbols('x')
a = sin(x)/x
b = exp(x**2)
c = cos(x)/x
d = sin(x**2)
e = cos(x**2)
f = x/ln(x)
g = ln(x)/(x+1)
A = integrate(a,x) 			
# Si(x)-->超越函数
B = integrate(b,x)			
# sqrt(pi)*erfi(x)/2-->erfi(x)误差函数
C = integrate(c,x)			
# -log(x) + log(x**2)/2 + Ci(x)-->待学习
D = integrate(d,x)			
# 3*sqrt(2)*sqrt(pi)*fresnels(sqrt(2)*x/sqrt(pi))*gamma(3/4)/(8*gamma(7/4))-->gamma伽马函数（欧拉第二积分）
E = integrate(e,x)			
# sqrt(2)*sqrt(pi)*fresnelc(sqrt(2)*x/sqrt(pi))*gamma(1/4)/(8*gamma(5/4))-->fresnelc(余弦积分函数)
F = integrate(f,x)			
# Ei(2*log(x))-->Ei(x)指数积分函数
G = integrate(g,x)			
# log(x)/(x + 1)
print(A,B,C,D,E,F,g,sep='\n')