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___ 2 \/ 2 cos (x) - -----*cos(x) = 0 2
a*w^2 + b*w + c = 0
D = b^2 - 4 * a * c =
(-sqrt(2)/2)^2 - 4 * (1) * (0) = 1/2
w1 = (-b + sqrt(D)) / (2*a)
w2 = (-b - sqrt(D)) / (2*a)
pi x1 = -- 4
pi x2 = -- 2
3*pi x3 = ---- 2
7*pi x4 = ---- 4
x4 = 7*pi/4
suma
pi pi 3*pi 7*pi -- + -- + ---- + ---- 4 2 2 4
=
4*pi
producto
pi pi 3*pi 7*pi --*--*----*---- 4 2 2 4
=
4 21*pi ------ 64
21*pi^4/64
x1 = 25.9181393921158
x2 = 89.5353906273091
x3 = 61.261056745001
x4 = 42.4115008234622
x5 = -99.7455667514759
x6 = -42.4115008234622
x7 = -29.845130209103
x8 = 17.2787595947439
x9 = 18.0641577581413
x10 = -36.1283155162826
x11 = 86.3937979737193
x12 = -10.9955742875643
x13 = -98.9601685880785
x14 = 82.4668071567321
x15 = 38.484510006475
x16 = -95.8185759344887
x17 = -76.1836218495525
x18 = -14.1371669411541
x19 = -5.49778714378214
x20 = 76.1836218495525
x21 = 55.7632696012188
x22 = 58.1194640914112
x23 = 10.9955742875643
x24 = -62.0464549083984
x25 = 120.16591899981
x26 = -92.6769832808989
x27 = -48.6946861306418
x28 = -23.5619449019235
x29 = -86.3937979737193
x30 = -26.7035375555132
x31 = -19.6349540849362
x32 = -67.5442420521806
x33 = -80.1106126665397
x34 = -1.5707963267949
x35 = 92.6769832808989
x36 = 36.1283155162826
x37 = -39.2699081698724
x38 = 4.71238898038469
x39 = -69.9004365423729
x40 = -76.9690200129499
x41 = 48.6946861306418
x42 = -32.2013246992954
x43 = 88.7499924639117
x44 = 76.9690200129499
x45 = 98.9601685880785
x46 = 83.2522053201295
x47 = -45.553093477052
x48 = -89.5353906273091
x49 = -70.6858347057703
x50 = -82.4668071567321
x51 = 73.8274273593601
x52 = -44.7676953136546
x53 = 11.7809724509617
x54 = -25.9181393921158
x55 = 20.4203522483337
x56 = 68.329640215578
x57 = 1.5707963267949
x58 = 45.553093477052
x59 = 95.8185759344887
x60 = -755.553033188345
x61 = -58.1194640914112
x62 = -93.4623814442964
x63 = -55.7632696012188
x64 = 24.3473430653209
x65 = 80.1106126665397
x66 = 7.85398163397448
x67 = 26.7035375555132
x68 = 29.845130209103
x69 = -54.9778714378214
x70 = -11.7809724509617
x71 = -63.6172512351933
x72 = 14.1371669411541
x73 = 39.2699081698724
x74 = -83.2522053201295
x75 = -4.71238898038469
x76 = 51.8362787842316
x77 = -88.7499924639117
x78 = 64.4026493985908
x79 = -73.8274273593601
x80 = 32.9867228626928
x81 = -32.9867228626928
x82 = 32.2013246992954
x83 = -49.4800842940392
x84 = -51.8362787842316
x85 = 67.5442420521806
x86 = -7.85398163397448
x87 = 69.9004365423729
x88 = 62.0464549083984
x89 = 54.9778714378214
x90 = 99.7455667514759
x91 = -18.0641577581413
x91 = -18.0641577581413