import sympy x=sympy.symbols('x') s='x**6 + x**5 + x**4 + x**3 + x**2 + x + 1'.replace(" ","") r=sympy.solve(s,x)print(r)for i in r: print(i)
结果是:
-cos(pi/7) - Isin(pi/7), -cos(pi/7) + Isin(pi/7), cos(2pi/7) - Isin(2pi/7), cos(2pi/7) + Isin(2pi/7), -cos(3pi/7) - Isin(3pi/7), -cos(3pi/7) + Isin(3pi/7)]
-cos(pi/7) - I*sin(pi/7)
-cos(pi/7) + I*sin(pi/7)
cos(2pi/7) - Isin(2*pi/7)
cos(2pi/7) + Isin(2*pi/7)
-cos(3pi/7) - Isin(3*pi/7)
-cos(3pi/7) + Isin(3*pi/7)
我该怎样判断-cos(3pi/7) + Isin(3*pi/7)是不是一个复数呢?
MMTTMM
四季花海
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