El profesor se sorprenderá mucho al ver tu solución correcta😉
/ ___ \ |-\/ 3 | |-------| \ 16 / cos(x) = --------- / 1 \ |---| \2*4/
suma
5*pi 7*pi ---- + ---- 6 6
=
2*pi
producto
5*pi 7*pi ----*---- 6 6
=
2 35*pi ------ 36
35*pi^2/36
5*pi x1 = ---- 6
7*pi x2 = ---- 6
x2 = 7*pi/6
x1 = -15.1843644923507
x2 = -8.90117918517108
x3 = 34.0339204138894
x4 = -28.7979326579064
x5 = -84.2994028713261
x6 = -79.0634151153431
x7 = -34.0339204138894
x8 = -96.8657734856853
x9 = -53.9306738866248
x10 = -97.9129710368819
x11 = 27.7507351067098
x12 = -40.317105721069
x13 = 9.94837673636768
x14 = 90.5825881785057
x15 = -3.66519142918809
x16 = -72.7802298081635
x17 = 22.5147473507269
x18 = 8.90117918517108
x19 = 91.6297857297023
x20 = -66.497044500984
x21 = 40.317105721069
x22 = 41.3643032722656
x23 = 96.8657734856853
x24 = -91.6297857297023
x25 = 97.9129710368819
x26 = 46.6002910282486
x27 = 59.1666616426078
x28 = -59.1666616426078
x29 = 52.8834763354282
x30 = 15.1843644923507
x31 = -35.081117965086
x32 = -21.4675497995303
x33 = 192.160750644576
x34 = 66.497044500984
x35 = 203.679923707738
x36 = 85.3466004225227
x37 = 2.61799387799149
x38 = -78.0162175641465
x39 = -46.6002910282486
x40 = 216.246294322097
x41 = 79.0634151153431
x42 = -27.7507351067098
x43 = -71.733032256967
x44 = -60.2138591938044
x45 = 53.9306738866248
x46 = 65.4498469497874
x47 = 84.2994028713261
x48 = 3.66519142918809
x49 = 72.7802298081635
x50 = -2.61799387799149
x51 = -47.6474885794452
x52 = -85.3466004225227
x53 = -41.3643032722656
x54 = 78.0162175641465
x55 = 28.7979326579064
x56 = -16.2315620435473
x57 = 71.733032256967
x58 = 21.4675497995303
x59 = -52.8834763354282
x60 = 47.6474885794452
x61 = 60.2138591938044
x62 = 16.2315620435473
x63 = -4697.20461589234
x64 = 35.081117965086
x65 = -22.5147473507269
x66 = -9.94837673636768
x67 = -128.281700021583
x68 = -90.5825881785057
x69 = -857.131195654415
x70 = -65.4498469497874
x70 = -65.4498469497874