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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)
-pi x1 = ---- 3
pi x2 = -- 3
/ / ___\\ / / ___\\ x3 = 2*im\atanh\\/ 2 // - 2*I*re\atanh\\/ 2 //
/ / ___\\ / / ___\\ x4 = - 2*im\atanh\\/ 2 // + 2*I*re\atanh\\/ 2 //
x4 = -2*im(atanh(sqrt(2))) + 2*i*re(atanh(sqrt(2)))
suma
pi pi / / ___\\ / / ___\\ / / ___\\ / / ___\\ - -- + -- + 2*im\atanh\\/ 2 // - 2*I*re\atanh\\/ 2 // + - 2*im\atanh\\/ 2 // + 2*I*re\atanh\\/ 2 // 3 3
=
0
producto
-pi pi / / / ___\\ / / ___\\\ / / / ___\\ / / ___\\\ ----*--*\2*im\atanh\\/ 2 // - 2*I*re\atanh\\/ 2 ///*\- 2*im\atanh\\/ 2 // + 2*I*re\atanh\\/ 2 /// 3 3
=
2 2 / / / ___\\ / / ___\\\ 4*pi *\- I*re\atanh\\/ 2 // + im\atanh\\/ 2 /// ------------------------------------------------ 9
4*pi^2*(-i*re(atanh(sqrt(2))) + im(atanh(sqrt(2))))^2/9
x1 = -11.5191730631626
x2 = -32.4631240870945
x3 = -80.634211442138
x4 = 26.1799387799149
x5 = -95.2949771588904
x6 = 82.7286065445312
x7 = 95.2949771588904
x8 = 93.2005820564972
x9 = 11.5191730631626
x10 = 36.6519142918809
x11 = -36.6519142918809
x12 = -93.2005820564972
x13 = 1.0471975511966
x14 = 55.5014702134197
x15 = -51.3126800086333
x16 = 19.8967534727354
x17 = 63.8790506229925
x18 = 32.4631240870945
x19 = 76.4454212373516
x20 = 89.0117918517108
x21 = -30.3687289847013
x22 = -49.2182849062401
x23 = -17.8023583703422
x24 = -26.1799387799149
x25 = 99.4837673636768
x26 = -19.8967534727354
x27 = -76.4454212373516
x28 = -38.7463093942741
x29 = 42.9350995990605
x30 = 45.0294947014537
x31 = 80.634211442138
x32 = -86.9173967493176
x33 = 57.5958653158129
x34 = 51.3126800086333
x35 = -13.6135681655558
x36 = -7.33038285837618
x37 = 86.9173967493176
x38 = 7.33038285837618
x39 = 109898.147010327
x40 = -24.0855436775217
x41 = -70.162235930172
x42 = -57.5958653158129
x43 = 13.6135681655558
x44 = -74.3510261349584
x45 = 5.23598775598299
x46 = -42.9350995990605
x47 = -55.5014702134197
x48 = 61.7846555205993
x49 = 17.8023583703422
x50 = 49.2182849062401
x51 = -4503.99666769657
x52 = 68.0678408277789
x53 = -105.766952670856
x54 = -82.7286065445312
x55 = 38.7463093942741
x56 = -68.0678408277789
x57 = -5.23598775598299
x58 = 24.0855436775217
x59 = 74.3510261349584
x60 = 30.3687289847013
x61 = 70.162235930172
x62 = -89.0117918517108
x63 = -99.4837673636768
x64 = -1.0471975511966
x65 = -61.7846555205993
x66 = -63.8790506229925
x67 = -45.0294947014537
x67 = -45.0294947014537