5m Zen
2sin 2 2x ) cos 2x ) 1 0
2sin 2 2x ) cos 2x ) 1 0 pictures 5
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2sin 2 2x
2sin 2 2x ) cos 2x ) 1 0
(m^2+2)cos^2x-2msin 2x+1u003d0
2sin 2 2x )- cos 2x )- 1 0
