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Solución
Ha introducido
[src]
2 2*x*sin(x) + x *cos(x) = 0
$$x^{2} \cos{\left(x \right)} + 2 x \sin{\left(x \right)} = 0$$
Respuesta numérica
[src]
x1 = 29.9118938695518
x2 = 48.7357007949054
x3 = 86.4169374541167
x4 = 95.839441141233
x5 = 83.2762171649775
x6 = -51.8748140534268
x7 = 36.1835330907526
x8 = 0.0
x9 = 51.8748140534268
x10 = 67.573830670859
x11 = 33.0471686947054
x12 = 8.09616360322292
x13 = -26.7780870755585
x14 = 5.08698509410227
x15 = -55.0142096788381
x16 = -92.6985552433969
x17 = 61.2936749662429
x18 = 11.17270586833
x19 = 20.5175229099417
x20 = -36.1835330907526
x21 = -23.6463238196036
x22 = -58.153842078645
x23 = -20.5175229099417
x24 = 70.7141100665485
x25 = 45.5969279840735
x26 = 14.2763529183365
x27 = 42.458570771699
x28 = -5.08698509410227
x29 = -29.9118938695518
x30 = 98.9803718651523
x31 = -42.458570771699
x32 = -80.1355651940744
x33 = -89.5577188827244
x34 = -11.17270586833
x35 = 2.2889297281034
x36 = -48.7357007949054
x37 = -17.3932439645948
x38 = -120.967848975693
x39 = 92.6985552433969
x40 = 39.3207281322521
x41 = -39.3207281322521
x42 = -83.2762171649775
x43 = 73.8545010149048
x44 = 58.153842078645
x45 = -8.09616360322292
x46 = -76.9949898891676
x47 = 64.4336791037316
x48 = -64.4336791037316
x49 = 89.5577188827244
x50 = 55.0142096788381
x51 = -33.0471686947054
x52 = -67.573830670859
x53 = 80.1355651940744
x54 = 76.9949898891676
x55 = -70.7141100665485
x56 = -61.2936749662429
x57 = 17.3932439645948
x58 = 26.7780870755585
x59 = -14.2763529183365
x60 = -98.9803718651523
x61 = 23.6463238196036
x62 = -86.4169374541167
x63 = -73.8545010149048
x64 = -45.5969279840735
x65 = 3.95930141892882e-7
x66 = -2.2889297281034
x67 = -95.839441141233
x67 = -95.839441141233