Найду корень уравнения: 2cos(2x)=кореньиз3
Разделим обе части ур-ния на 2
сумма
pi 11*pi 0 + -- + ----- 12 12
=
pi
произведение
pi 11*pi 1*--*----- 12 12
=
2 11*pi ------ 144
pi x1 = -- 12
11*pi x2 = ----- 12
x1 = 53.6688744988256
x2 = -43.720497762458
x3 = -47.3856891916461
x4 = -85.0848010347236
x5 = 18.5877565337396
x6 = 2.87979326579064
x7 = 75.6600230739542
x8 = 78.2780169519457
x9 = -9.68657734856853
x10 = -40.5789051088682
x11 = 3.40339204138894
x12 = 34.2957198016886
x13 = 6.02138591938044
x14 = 56.2868683768171
x15 = -84.5612022591253
x16 = -69.3768377667746
x17 = 12.30457122656
x18 = 81.9432083811338
x19 = -50.0036830696375
x20 = -100.269165527074
x21 = -15.9697626557481
x22 = 0.261799387799149
x23 = -53.6688744988256
x24 = 59.9520598060052
x25 = -63.093652459595
x26 = 91.3679863419031
x27 = -41.1025038844665
x28 = 22.2529479629277
x29 = -12.30457122656
x30 = -87.7027949127151
x31 = -103.934356956262
x32 = 50.0036830696375
x33 = 47.3856891916461
x34 = 37.9609112308767
x35 = 66.2352451131848
x36 = -93.9859802198946
x37 = -3.40339204138894
x38 = 44.2440965380563
x39 = 69.3768377667746
x40 = 31.6777259236971
x41 = -18.5877565337396
x42 = 62.5700536839967
x43 = 71.9948316447661
x44 = -25.3945406165175
x45 = 24.8709418409192
x46 = -6.02138591938044
x47 = -75.6600230739542
x48 = -31.6777259236971
x49 = 90.8443875663049
x50 = -56.2868683768171
x51 = -91.3679863419031
x52 = -71.9948316447661
x53 = 93.9859802198946
x54 = -59.9520598060052
x55 = -19.1113553093379
x56 = 138.49187614575
x57 = -21.7293491873294
x58 = -28.012534494509
x59 = -232.739655753444
x60 = 40.5789051088682
x61 = -81.9432083811338
x62 = 68.8532389911763
x63 = -65.7116463375865
x64 = 46.8620904160477
x65 = -37.9609112308767
x66 = 84.5612022591253
x67 = 132.20869083857
x68 = 100.269165527074
x69 = 15.9697626557481
x70 = 9.68657734856853
x71 = 25.3945406165175
x72 = -34.2957198016886
x73 = 28.012534494509
x74 = 88.2263936883134
x75 = -78.2780169519457
x76 = -663.137849295245
x77 = -97.6511716490827
x78 = -62.5700536839967
x79 = 97.6511716490827