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\/ 3
cos(3 - 2*x) = -----
2
3 11*pi
x_1 = - + -----
2 12
3 pi
x_2 = - + --
2 12
сумма
3 11*pi 3 pi - + ----- + - + -- 2 12 2 12
=
3 + pi
произведение
3 11*pi 3 pi - + ----- * - + -- 2 12 2 12
=
(18 + pi)*(18 + 11*pi)
----------------------
144
x1 = -11.3281700021583
x2 = 55.1688744988256
x3 = -45.8856891916461
x4 = 89.7263936883134
x5 = 11.1865773485685
x6 = -20.7529479629277
x7 = -49.0272818452358
x8 = 32.6541271480988
x9 = 10.6629785729702
x10 = 48.3620904160477
x11 = 76.6364242983559
x12 = -93.0095789954929
x13 = -99.2927643026725
x14 = 8.04498469497874
x15 = 64.593652459595
x16 = 39.4609112308767
x17 = -27.0361332701073
x18 = 61.4520598060052
x19 = -55.3104671524154
x20 = -70.4948316447661
x21 = 30.0361332701073
x22 = -64.2116463375865
x23 = -67.8768377667746
x24 = -32.7957198016886
x25 = 96.0095789954929
x26 = -98.7691655270742
x27 = -7.66297857297023
x28 = 20.0877565337396
x29 = -8.18657734856853
x30 = -54.7868683768171
x31 = 58.3104671524154
x32 = 33.1777259236971
x33 = 4.90339204138894
x34 = 51.5036830696375
x35 = 381.894510472164
x36 = -17.6113553093379
x37 = 38.9373124552784
x38 = -95.6275728734844
x39 = -35.9373124552784
x40 = 52.0272818452358
x41 = 218.008093709897
x42 = 1.76179938779915
x43 = -48.5036830696375
x44 = -5.04498469497874
x45 = 26.3709418409192
x46 = -76.7780169519457
x47 = 42.0789051088682
x48 = 86.0612022591253
x49 = 74.0184304203644
x50 = -71.0184304203644
x51 = -29.6541271480988
x52 = 45.7440965380563
x53 = -86.2027949127151
x54 = -61.593652459595
x55 = -42.220497762458
x56 = 23.7529479629277
x57 = 16.9461638801498
x58 = 14.3281700021583
x59 = 64.0700536839967
x60 = -10.80457122656
x61 = -51.6452757232273
x62 = 92.3443875663049
x63 = 82.9196096055355
x64 = -77.301615727544
x65 = 70.3532389911763
x66 = -92.4859802198946
x67 = -39.6025038844665
x68 = -133.85028349216
x69 = -13.9461638801498
x70 = 20.6113553093379
x71 = -57.9284610304069
x72 = -1.90339204138894
x73 = 60.9284610304069
x74 = 36.3193185772869
x75 = 98.6275728734844
x76 = 54.6452757232273
x77 = 67.7352451131848
x78 = -26.512534494509
x79 = -83.5848010347236
x80 = -79.9196096055355
x81 = -33.3193185772869
x82 = 83.4432083811338
x83 = -20.2293491873294
x84 = -4.52138591938044
x85 = 4.37979326579064
x86 = -89.8679863419031
x87 = -23.8945406165175
x88 = 80.301615727544
x89 = 17.4697626557481
x90 = -58.4520598060052
x91 = -73.6364242983559
x91 = -73.6364242983559