The teacher will be very surprised to see your correct solution 😉
/x pi\ sin|- + --| = 1/2 \3 6 /
sum
2*pi
=
2*pi
product
0*2*pi
=
0
0
x1 = 0.0
x2 = -75.398223686155
x3 = -50.2654824574367
x4 = 81.6814089933346
x5 = -37.6991118430775
x6 = 25.1327412287183
x7 = -14771.7686571792
x8 = -18.8495559215388
x9 = -56.5486677646163
x10 = 18.8495559215388
x11 = 56.5486677646163
x12 = -219.911485751286
x13 = 6.28318530717959
x14 = 37.6991118430775
x15 = 100.530964914873
x16 = 94.2477796076938
x17 = -12.5663706143592
x18 = -94.2477796076938
x19 = -131.946891450771
x20 = -163.362817986669
x21 = 1118.40698467797
x22 = 43.9822971502571
x23 = 75.398223686155
x24 = 62.8318530717959
x25 = -87.9645943005142
x26 = -69.1150383789755
x27 = -31.4159265358979
x27 = -31.4159265358979