El profesor se sorprenderá mucho al ver tu solución correcta😉
/pi*(x - 4)\ cos|----------| = 1/2 \ 3 /
Dividamos ambos miembros de la ecuación en -1
x1 = -9.0
x2 = 87.0
x3 = -37.0
x4 = 29.0
x5 = 89.0
x6 = -39.0
x7 = -99.0
x8 = 77.0
x9 = -51.0
x10 = -1.0
x11 = -75.0
x12 = -81.0
x13 = -19.0
x14 = -3.0
x15 = -63.0
x16 = -49.0
x17 = -93.0
x18 = 59.0
x19 = 17.0
x20 = 23.0
x21 = -25.0
x22 = 63.0
x23 = -7.0
x24 = -91.0
x25 = -67.0
x26 = 53.0
x27 = -79.0
x28 = 45.0
x29 = -13.0
x30 = -31.0
x31 = 75.0
x32 = 81.0
x33 = 39.0
x34 = 47.0
x35 = 95.0
x36 = -15.0
x37 = 69.0
x38 = -61.0
x39 = -87.0
x40 = 35.0
x41 = 93.0
x42 = 15.0
x43 = 5.0
x44 = -21.0
x45 = -57.0
x46 = 71.0
x47 = -33.0
x48 = 101.0
x49 = 27.0
x50 = 65.0
x51 = 11.0
x52 = 21.0
x53 = 9.0
x54 = -97.0
x55 = 83.0
x56 = 41.0
x57 = 51.0
x58 = 33.0
x59 = -85.0
x60 = -73.0
x61 = -69.0
x62 = -55.0
x63 = 99.0
x64 = -27.0
x65 = 3.0
x66 = -45.0
x67 = -43.0
x68 = 57.0
x68 = 57.0