Найду корень уравнения: cos(u/7)=-1
сумма
0 + 7*pi
=
7*pi
произведение
1*7*pi
=
7*pi
u1 = -65.973449228882
u2 = -109.955742296545
u3 = -65.9734421561072
u4 = -65.973454436764
u5 = 21.9911397696265
u6 = 65.9734446694622
u7 = 109.955739768327
u8 = 109.955741786578
u9 = 109.955750118269
u10 = -21.9911450345957
u11 = 21.9911477418788
u12 = -21.9911494163524
u13 = -21.9911476034353
u14 = 65.9734461421905
u15 = 65.9734492698185
u16 = 65.9734486623417
u17 = -109.955739897532
u18 = -21.9911467468757
u19 = -65.9734425563067
u20 = 65.9734421405363
u21 = -21.9911456173525
u22 = 65.9734440313146
u23 = 21.9911521176244
u24 = -21.9911520762816
u25 = 65.9734492889902
u26 = -65.9734493065658
u27 = 2836.85817471226
u28 = 21.9911511612625
u29 = -21.9911516565901
u30 = 65.9734368901863
u31 = -65.9734457648986
u32 = 65.9734449001142
u33 = 21.9911490333085
u34 = -65.9734427573824
u35 = 21.9911521406704
u36 = 65.9734457530082
u37 = 109.955739289654
u38 = -21.991152157574
u39 = 21.9911454849446
u40 = 65.9734483175401
u41 = -65.9734487980189
u42 = -21.9911502838542
u43 = -21.9911495634843
u44 = 65.9734467128769
u45 = 21.9911454818007
u46 = -21.9911480761133
u47 = -21.9911459950274
u48 = 21.991151522556
u49 = 21.991148585209
u50 = -65.9734466793023
u51 = 21.991151752945
u52 = 21.9911461027223
u53 = -21.991151053773
u54 = 65.9734475680066
u55 = 21.9911450763433
u56 = -21.9911556709859
u57 = -65.9734439043292
u58 = 65.9734530846333
u59 = -65.9734482102566
u60 = 65.9734426265841
u61 = 21.9911504105696
u62 = -65.9734451860671
u63 = -65.9734431513297
u64 = 65.9734489075445
u65 = 65.9734422289926
u66 = -65.9734421868415
u67 = 21.9911449914601
u68 = 1253.4954691642
u69 = 65.9734432592293
u70 = -21.9911454016721
u71 = 21.9911560498887
u72 = -65.9734380239998
u73 = 21.9911475527726
u74 = 65.9734426367208
u75 = -65.9734488279896
u76 = -65.9734465745794
u77 = -21.9911573388711
u78 = 21.9911495547231
u79 = 21.9911468737264
u80 = 109.955739381666
u81 = -109.955751525328
u82 = -21.9911409862258
u83 = -21.9911516731028
u84 = -65.9734474414272
u85 = -109.955739339113
u86 = -21.9911485864385
u87 = -65.9734447615984
u88 = -21.9911450076955
u89 = -109.955739304565