[1] z1 = -1+i = √2(cos 3π/4 + i sin 3π/4) z2 =√2(cos 5π/4 + i sin 5π/4)
[2] ウエ √√2(cos 3π/8 + i sin 3π/8), √√2(cos 11π/8 + i sin 9π/8)
オカ √√2(cos 5π/8 + i sin 5π/8), √√2(cos 13π/8 + i sin 13π/8)
キ w**4 + w**2 +2 =0 ク 0 ケ -2 コ -2
[3] S1*S1 = 1/4 x 2 x √2 x sin²3π/8 = 1√2 x 1/2(1-cos 3π/4) = (1+ 1/√2) / 2√2 = √2+1 / 4
S2*S2 = 1/4 x 2 x √2 x sin²5π/8 =1/4 x 2 x √2 x sin²3π/8 = S1*S1 ∴ S1/S2 = 1