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2 2*sin (x) + 5*cos(x) + 1 = 0
a*w^2 + b*w + c = 0
D = b^2 - 4 * a * c =
(5)^2 - 4 * (-2) * (3) = 49
w1 = (-b + sqrt(D)) / (2*a)
w2 = (-b - sqrt(D)) / (2*a)
suma
/ ___\ / ___\ 2*pi 2*pi |\/ 2 | |\/ 2 | - ---- + ---- - 2*I*atanh|-----| + 2*I*atanh|-----| 3 3 \ 2 / \ 2 /
=
0
producto
/ ___\ / ___\ -2*pi 2*pi |\/ 2 | |\/ 2 | -----*----*-2*I*atanh|-----|*2*I*atanh|-----| 3 3 \ 2 / \ 2 /
=
/ ___\ 2 2|\/ 2 | -16*pi *atanh |-----| \ 2 / --------------------- 9
-16*pi^2*atanh(sqrt(2)/2)^2/9
-2*pi x1 = ----- 3
2*pi x2 = ---- 3
/ ___\ |\/ 2 | x3 = -2*I*atanh|-----| \ 2 /
/ ___\ |\/ 2 | x4 = 2*I*atanh|-----| \ 2 /
x4 = 2*i*atanh(sqrt(2)/2)
x1 = 64.9262481741891
x2 = -90.0589894029074
x3 = -46.0766922526503
x4 = -41.8879020478639
x5 = -83.7758040957278
x6 = -92.1533845053006
x7 = -58.6430628670095
x8 = -159.174027781883
x9 = -54.4542726622231
x10 = -23.0383461263252
x11 = -85.870199198121
x12 = 23.0383461263252
x13 = -64.9262481741891
x14 = 60.7374579694027
x15 = -29.3215314335047
x16 = -4.18879020478639
x17 = 20.943951023932
x18 = 2.0943951023932
x19 = -178.023583703422
x20 = 77.4926187885482
x21 = 90.0589894029074
x22 = 29.3215314335047
x23 = -16.7551608191456
x24 = 48.1710873550435
x25 = -20.943951023932
x26 = -60.7374579694027
x27 = -77.4926187885482
x28 = 39.7935069454707
x29 = -39.7935069454707
x30 = -2.0943951023932
x31 = -10.471975511966
x32 = -104.71975511966
x33 = -35.6047167406843
x34 = -79.5870138909414
x35 = -586.430628670095
x36 = 14.6607657167524
x37 = 58.6430628670095
x38 = -52.3598775598299
x39 = 79.5870138909414
x40 = 73.3038285837618
x41 = 52.3598775598299
x42 = 8.37758040957278
x43 = 54.4542726622231
x44 = 33.5103216382911
x45 = -98.4365698124802
x46 = 83.7758040957278
x47 = -33.5103216382911
x48 = 71.2094334813686
x49 = 4.18879020478639
x50 = 98.4365698124802
x51 = 96.342174710087
x52 = -14.6607657167524
x53 = -27.2271363311115
x54 = -96.342174710087
x55 = 16.7551608191456
x56 = 10.471975511966
x57 = 92.1533845053006
x58 = -73.3038285837618
x59 = 67.0206432765823
x60 = 35.6047167406843
x61 = -48.1710873550435
x62 = 85.870199198121
x63 = -67.0206432765823
x64 = -8.37758040957278
x65 = 41.8879020478639
x66 = 46.0766922526503
x67 = 27.2271363311115
x68 = -71.2094334813686
x68 = -71.2094334813686