± π/12 + πn/2, nєZ.
Объяснение:
2cos4x = 1
cos4x = 1/2
4х = ± аrccos(1/2) + 2πn, nєZ
4х = ± π/3 + 2πn, nєZ
х = ± π/12 + πn/2, nєZ
± π/12 + πn/2, nєZ.
Объяснение:
2cos4x = 1
cos4x = 1/2
4х = ± аrccos(1/2) + 2πn, nєZ
4х = ± π/3 + 2πn, nєZ
х = ± π/12 + πn/2, nєZ