Найду корень уравнения: tan(x)+1=0
Перенесём 1 в правую часть ур-ния
с изменением знака при 1
сумма
pi 0 - -- 4
=
-pi ---- 4
произведение
-pi 1*---- 4
=
-pi ---- 4
x1 = 65.1880475619882
x2 = -95.0331777710912
x3 = 2.35619449019234
x4 = -10.2101761241668
x5 = 40.0553063332699
x6 = -16.4933614313464
x7 = -44.7676953136546
x8 = 90.3207887907066
x9 = 55.7632696012188
x10 = -82.4668071567321
x11 = 87.1791961371168
x12 = 99.7455667514759
x13 = 43.1968989868597
x14 = 96.6039740978861
x15 = -19.6349540849362
x16 = 62.0464549083984
x17 = -91.8915851175014
x18 = -32.2013246992954
x19 = -13.3517687777566
x20 = 74.6128255227576
x21 = -101.316363078271
x22 = 21.2057504117311
x23 = -57.3340659280137
x24 = -88.7499924639117
x25 = 93.4623814442964
x26 = -35.3429173528852
x27 = 77.7544181763474
x28 = -54.1924732744239
x29 = 5.49778714378214
x30 = -29.0597320457056
x31 = -76.1836218495525
x32 = 52.621676947629
x33 = 58.9048622548086
x34 = 33.7721210260903
x35 = 8.63937979737193
x36 = 80.8960108299372
x37 = -51.0508806208341
x38 = -60.4756585816035
x39 = 36.9137136796801
x40 = -25.9181393921158
x41 = -0.785398163397448
x42 = 14.9225651045515
x43 = -73.0420291959627
x44 = -85.6083998103219
x45 = 11.7809724509617
x46 = 84.037603483527
x47 = -38.484510006475
x48 = 24.3473430653209
x49 = 27.4889357189107
x50 = -98.174770424681
x51 = -79.3252145031423
x52 = -41.6261026600648
x53 = -66.7588438887831
x54 = 30.6305283725005
x55 = 71.4712328691678
x56 = -3.92699081698724
x57 = -7.06858347057703
x58 = -69.9004365423729
x59 = -63.6172512351933
x60 = 68.329640215578
x61 = 46.3384916404494
x62 = -47.9092879672443
x63 = -22.776546738526
x64 = 18.0641577581413
x65 = 49.4800842940392