El profesor se sorprenderá mucho al ver tu solución correcta😉
/ pi\ cos|3*x - --| = -1 \ 4 /
-pi x1 = ---- 4
5*pi x2 = ---- 12
x2 = 5*pi/12
suma
pi 5*pi - -- + ---- 4 12
=
pi -- 6
producto
-pi 5*pi ----*---- 4 12
=
2 -5*pi ------ 48
-5*pi^2/48
x1 = 9.68657750666355
x2 = 30.6305282141644
x3 = 7.59218241507256
x4 = 18.0641575843062
x5 = 72.5184302880001
x6 = -80.3724118874525
x7 = 76.7072204634264
x8 = 68.3296401650627
x9 = -99.2219681230205
x10 = 1.30899680428975
x11 = 82.9904063510015
x12 = 57.8576648042324
x13 = -9.16297868279801
x14 = 99.7455668949014
x15 = 66.2352451246023
x16 = 45.2912938571067
x17 = -65.7116463637318
x18 = 43.1968990909536
x19 = -86.6555973660817
x20 = -17.5405590939996
x21 = -88.749992830708
x22 = 122.783912998323
x23 = 74.6128253671092
x24 = 28.5361331323541
x25 = -76.183621730839
x26 = 5.49778730168372
x27 = 13.8753676452733
x28 = -34.2957196474121
x29 = -19.6349541541781
x30 = -32.2013245736809
x31 = 51.5744795652683
x32 = -21.7293492019319
x33 = 55.7632697391846
x34 = -13.3517689381444
x35 = 80.8960108103565
x36 = -30.1069295143413
x37 = 95.5567767146611
x38 = 34.8193184526325
x39 = -42.673300271584
x40 = 97.6511718132156
x41 = -84.5612021281352
x42 = 47.3856892695311
x43 = -7.06858344988296
x44 = 26.4417380633665
x45 = -92.9387830063014
x46 = -97.1275729389989
x47 = -78.2780168019945
x48 = -7.06858337874519
x49 = 89.2735908908927
x50 = -36.3901147358536
x51 = -67.806041389319
x52 = 53.6688746602139
x53 = 20.1585529641208
x54 = -71.9948316512075
x55 = -63.6172513131713
x56 = -59.4284611775882
x57 = -40.5789049913739
x58 = -61.5228562509886
x59 = -11.2573738326293
x60 = 22.2529479607544
x61 = 93.4623815888092
x62 = -53.1452758138067
x63 = 62.0464548191486
x64 = -57.334066089755
x65 = -38.4845098442049
x66 = 11.780972582991
x67 = 49.4800844461214
x68 = 32.7249233148023
x69 = 64.1408501561777
x70 = -95.0331774856139
x71 = 78.8016155914877
x72 = 59.952059850908
x73 = -23.8237442162572
x74 = 7208.12254390983
x75 = 24.3473430052226
x76 = 15.9697626863592
x77 = 91.3679863907562
x78 = -28.0125344805823
x79 = 70.424035221104
x80 = 36.9137137078196
x81 = 24.3473427690631
x82 = 3.40339214158485
x83 = -51.0508804441991
x84 = -82.4668069913215
x85 = -103.410758569044
x86 = -15.4461640228502
x87 = -55.2396709786605
x88 = -74.0892266747134
x88 = -74.0892266747134