Найду корень уравнения: ctg^2(x)=3
a*w^2 + b*w + c = 0
D = b^2 - 4 * a * c =
(0)^2 - 4 * (1) * (-3) = 12
w1 = (-b + sqrt(D)) / (2*a)
w2 = (-b - sqrt(D)) / (2*a)
-pi x1 = ---- 6
pi x2 = -- 6
сумма
pi pi 0 - -- + -- 6 6
=
0
произведение
-pi pi 1*----*-- 6 6
=
2 -pi ----- 36
x1 = -62.3082542961976
x2 = 97.9129710368819
x3 = 74.8746249105567
x4 = -49.7418836818384
x5 = -5.75958653158129
x6 = 53.9306738866248
x7 = -87.4409955249159
x8 = -60.2138591938044
x9 = -71.733032256967
x10 = 9.94837673636768
x11 = 100.007366139275
x12 = 82.2050077689329
x13 = 66.497044500984
x14 = 68.5914396033772
x15 = 60.2138591938044
x16 = 13.0899693899575
x17 = -65.4498469497874
x18 = -47.6474885794452
x19 = 40.317105721069
x20 = -12.0427718387609
x21 = -27.7507351067098
x22 = -93.7241808320955
x23 = -84.2994028713261
x24 = -75.9218224617533
x25 = 34.0339204138894
x26 = -9.94837673636768
x27 = 30.8923277602996
x28 = 18.3259571459405
x29 = 25.6563400043166
x30 = 47.6474885794452
x31 = 3.66519142918809
x32 = -21.4675497995303
x33 = 44.5058959258554
x34 = -19497.2476069539
x35 = -40.317105721069
x36 = 75.9218224617533
x37 = -85.3466004225227
x38 = -78.0162175641465
x39 = -34.0339204138894
x40 = -38.2227106186758
x41 = 88.4881930761125
x42 = 93.7241808320955
x43 = 71.733032256967
x44 = 94546.7545085604
x45 = -25.6563400043166
x46 = -31.9395253114962
x47 = -56.025068989018
x48 = -100.007366139275
x49 = -69.6386371545737
x50 = 63.3554518473942
x51 = 57535.6514566191
x52 = 12.0427718387609
x53 = 78.0162175641465
x54 = -97.9129710368819
x55 = 368.089939245604
x56 = -16.2315620435473
x57 = 46.6002910282486
x58 = -82.2050077689329
x59 = 38.2227106186758
x60 = -91.6297857297023
x61 = -8.90117918517108
x62 = 49.7418836818384
x63 = 62.3082542961976
x64 = -3.66519142918809
x65 = 56.025068989018
x66 = 5.75958653158129
x67 = -43.4586983746588
x68 = -53.9306738866248
x69 = 84.2994028713261
x70 = -18.3259571459405
x71 = 31.9395253114962
x72 = 19.3731546971371
x73 = 27.7507351067098
x74 = 22.5147473507269
x75 = 90.5825881785057
x76 = 16.2315620435473