Найду корень уравнения: x + 1/x = 2
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(-2)^2 - 4 * (1) * (1) = 0
x = -b/2a = --2/2/(1)
x1 = 1.00000044563069
x2 = 1.00000049783065
x3 = 1.0000004502697
x4 = 1.00000046386162
x5 = 1.00000045144032
x6 = 1.00000043629339
x7 = 1.00000046626229
x8 = 1.0000004656446
x9 = 1.00000070851186
x10 = 1.00000046366974
x11 = 1.00000044006575
x12 = 1.00000044276613
x13 = 1.00000045397983
x14 = 1.00000047348771
x15 = 1.00000046512465
x16 = 1.00000046454713
x17 = 1.00000042129807
x18 = 1.0000004639637
x19 = 1.00000045348398
x20 = 1.00000046908543
x21 = 1.00000044703986
x22 = 1.00000046468092
x23 = 1.00000049223107
x24 = 1.00000044867488
x25 = 1.00000045288114
x26 = 1.00000046828186
x27 = 1.00000045304372
x28 = 1.00000045439486
x29 = 1.00000048008703
x30 = 1.00000044991869
x31 = 1.00000047683445
x32 = 1.00000045386431
x33 = 1.00000041385598
x34 = 1.00000045419616
x35 = 1.00000046954221
x36 = 1.00000047187902
x37 = 1.00000046407022
x38 = 1.00000046792657
x39 = 1.00000034844526
x40 = 1.0000004306526
x41 = 1.00000046649482
x42 = 1.00000045252815
x43 = 1.0000004508967
x44 = 1.00000046604389
x45 = 1.00000046729234
x46 = 1.00000044818159
x47 = 1.00000045117786
x48 = 1.00000038444561
x49 = 1.00000044479462
x50 = 1.00000046376372
x51 = 1.00000047445377
x52 = 1.00000050570596
x53 = 1.00000043834986
x54 = 1.00000046528858
x55 = 1.00000046546164
x56 = 1.00000044912541
x57 = 1.00000045429758
x58 = 1.00000048220504
x59 = 1.00000057854469
x60 = 1.00000046441957
x61 = 1.00000044953853
x62 = 1.00000046418149
x63 = 1.0000005175984
x64 = 1.0000004415192
x65 = 1.00000045059478
x66 = 1.00000044763915
x67 = 1.00000046759768
x68 = 1.00000047263583
x69 = 1.00000053763502
x70 = 1.00000045213249
x71 = 1.00000045361678
x72 = 1.00000045334455
x73 = 1.00000046429782
x74 = 1.00000047004264
x75 = 1.00000044637425
x76 = 1.00000046674289
x77 = 1.00000047832433
x78 = 1.00000046866685
x79 = 1.0000004266364
x80 = 1.00000045319798
x81 = 1.00000048479785
x82 = 1.00000043378375
x83 = 1.00000046700812
x84 = 1.00000046496914
x85 = 1.00000047555861
x86 = 1.00000047059331
x87 = 1.00000024465651
x88 = 1.00000046482142
x89 = 1.00000045191615
x90 = 1.00000045233613
x91 = 1.00000040276082
x92 = 1.00000045270954
x93 = 1.00000045448826
x94 = 1.00000044384765
x95 = 1.00000045374342
x96 = 1.00000045168589
x97 = 1.00000048804528
x98 = 1.00000046583836
x99 = 1.00000045409035
x100 = 1.00000047120219