The teacher will be very surprised to see your correct solution 😉
sum
4*pi 8*pi 0 + ---- + ---- 3 3
=
4*pi
product
4*pi 8*pi 1*----*---- 3 3
=
2 32*pi ------ 9
32*pi^2/9
4*pi x1 = ---- 3
8*pi x2 = ---- 3
x1 = 54.4542726622231
x2 = -192.684349420174
x3 = 20.943951023932
x4 = 58.6430628670095
x5 = -67.0206432765823
x6 = -71.2094334813686
x7 = -58.6430628670095
x8 = -79.5870138909414
x9 = -83.7758040957278
x10 = -20.943951023932
x11 = 96.342174710087
x12 = 67.0206432765823
x13 = 71.2094334813686
x14 = -92.1533845053006
x15 = -29.3215314335047
x16 = 4.18879020478639
x17 = 8.37758040957278
x18 = -117.286125734019
x19 = 33.5103216382911
x20 = 83.7758040957278
x21 = -96.342174710087
x22 = 16.7551608191456
x23 = 41.8879020478639
x24 = -41.8879020478639
x25 = -33.5103216382911
x26 = 29.3215314335047
x27 = -8.37758040957278
x28 = -4.18879020478639
x29 = -46.0766922526503
x30 = -16.7551608191456
x31 = -54.4542726622231
x32 = 79.5870138909414
x33 = 46.0766922526503
x34 = 92.1533845053006
x34 = 92.1533845053006