Найду корень уравнения: √2 cosx+1=0
Перенесём 1 в правую часть ур-ния
с изменением знака при 1
Разделим обе части ур-ния на sqrt(2)
3*pi x1 = ---- 4
5*pi x2 = ---- 4
x1 = 14.9225651045515
x2 = 255.254403104171
x3 = 8.63937979737193
x4 = -98.174770424681
x5 = -8.63937979737193
x6 = -46.3384916404494
x7 = 16.4933614313464
x8 = 65.1880475619882
x9 = 66.7588438887831
x10 = -60.4756585816035
x11 = 33.7721210260903
x12 = 71.4712328691678
x13 = 77.7544181763474
x14 = 40.0553063332699
x15 = -84.037603483527
x16 = -85.6083998103219
x17 = -58.9048622548086
x18 = -35.3429173528852
x19 = 73.0420291959627
x20 = 10.2101761241668
x21 = 21.2057504117311
x22 = 98.174770424681
x23 = -335.36501577071
x24 = -2.35619449019234
x25 = -54.1924732744239
x26 = -16.4933614313464
x27 = 96.6039740978861
x28 = -22.776546738526
x29 = 2.35619449019234
x30 = -47.9092879672443
x31 = -91.8915851175014
x32 = 91.8915851175014
x33 = -77.7544181763474
x34 = 54.1924732744239
x35 = 79.3252145031423
x36 = 39047.6404896309
x37 = 85.6083998103219
x38 = -33.7721210260903
x39 = 2341.27192508779
x40 = -10.2101761241668
x41 = 47.9092879672443
x42 = -79.3252145031423
x43 = -21.2057504117311
x44 = 46.3384916404494
x45 = -27.4889357189107
x46 = -90.3207887907066
x47 = -71.4712328691678
x48 = 35.3429173528852
x49 = -40.0553063332699
x50 = -65.1880475619882
x51 = 41.6261026600648
x52 = 58.9048622548086
x53 = -73.0420291959627
x54 = -66.7588438887831
x55 = 104.457955731861
x56 = -14.9225651045515
x57 = 29.0597320457056
x58 = -3.92699081698724
x59 = 60.4756585816035
x60 = -41.6261026600648
x61 = 52.621676947629
x62 = 3.92699081698724
x63 = 22.776546738526
x64 = -96.6039740978861
x65 = 27.4889357189107
x66 = 84.037603483527
x67 = -29.0597320457056
x68 = -52.621676947629
x69 = 90.3207887907066