ω = 314
s1(t) = 2 * sin(ω * t)
s2(t) = 1.5 * sin(ω * t - π / 2)
s3(t) = 3 * cos(ω * t)
s4(t) = 4 * sin(ω * t + π / 4)
s5(t) = cos(ω * t - π / 4)
s6(t) = cos(ω * t + π / 3)