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2*cos(5*x)=0 la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
2*cos(5*x) = 0
$$2 \cos{\left(5 x \right)} = 0$$
Solución detallada
Tenemos la ecuación
$$2 \cos{\left(5 x \right)} = 0$$
es la ecuación trigonométrica más simple
cambiando el signo de 0

Obtenemos:
$$2 \cos{\left(5 x \right)} = 0$$
Dividamos ambos miembros de la ecuación en 2

La ecuación se convierte en
$$\cos{\left(5 x \right)} = 0$$
Esta ecuación se reorganiza en
$$5 x = \pi n + \operatorname{acos}{\left(0 \right)}$$
$$5 x = \pi n - \pi + \operatorname{acos}{\left(0 \right)}$$
O
$$5 x = \pi n + \frac{\pi}{2}$$
$$5 x = \pi n - \frac{\pi}{2}$$
, donde n es cualquier número entero
Dividamos ambos miembros de la ecuación obtenida en
$$5$$
obtenemos la respuesta:
$$x_{1} = \frac{\pi n}{5} + \frac{\pi}{10}$$
$$x_{2} = \frac{\pi n}{5} - \frac{\pi}{10}$$
Gráfica
Respuesta rápida [src]
     pi
x1 = --
     10
$$x_{1} = \frac{\pi}{10}$$
     3*pi
x2 = ----
      10 
$$x_{2} = \frac{3 \pi}{10}$$
x2 = 3*pi/10
Suma y producto de raíces [src]
suma
pi   3*pi
-- + ----
10    10 
$$\frac{\pi}{10} + \frac{3 \pi}{10}$$
=
2*pi
----
 5  
$$\frac{2 \pi}{5}$$
producto
pi 3*pi
--*----
10  10 
$$\frac{\pi}{10} \frac{3 \pi}{10}$$
=
    2
3*pi 
-----
 100 
$$\frac{3 \pi^{2}}{100}$$
3*pi^2/100
Respuesta numérica [src]
x1 = -5.96902604182061
x2 = -36.1283155162826
x3 = 95.1902574037707
x4 = 46.18141200777
x5 = -31.7300858012569
x6 = 36.1283155162826
x7 = 72.5707902979242
x8 = 90.1637091580271
x9 = 61.8893752757189
x10 = 38.0132711084365
x11 = -49.9513231920777
x12 = 32.3584043319749
x13 = 78.2256570743859
x14 = 24.1902634326414
x15 = -80.1106126665397
x16 = -83.8805238508475
x17 = -93.9336203423348
x18 = -61.8893752757189
x19 = -63.7743308678728
x20 = -17.9070781254618
x21 = -29.845130209103
x22 = 17.9070781254618
x23 = -85.7654794430014
x24 = -92.0486647501809
x25 = -71.9424717672063
x26 = -19.7920337176157
x27 = -60.0044196835651
x28 = 34.2433599241287
x29 = 56.2345084992573
x30 = 16.0221225333079
x31 = 68.1725605828985
x32 = 14.1371669411541
x33 = -103.358398303104
x34 = 58.1194640914112
x35 = -53.7212343763855
x36 = -51.8362787842316
x37 = 27.9601746169492
x38 = 92.0486647501809
x39 = 80.1106126665397
x40 = 98.3318500573605
x41 = -21.6769893097696
x42 = 66.2876049907446
x43 = -41.7831822927443
x44 = 60.0044196835651
x45 = 83.8805238508475
x46 = 27.3318560862312
x47 = 39.8982267005904
x48 = 71.9424717672063
x49 = -75.712382951514
x50 = 4.08407044966673
x51 = -16.0221225333079
x52 = -11.6238928182822
x53 = -58.1194640914112
x54 = -38.0132711084365
x55 = -102.730079772386
x56 = 10.3672557568463
x57 = 0.314159265358979
x58 = -14.1371669411541
x59 = -87.6504350351552
x60 = -4.08407044966673
x61 = 93.9336203423348
x62 = 12.2522113490002
x63 = -7.85398163397448
x64 = -76.9690200129499
x65 = -33.6150413934108
x66 = 81.9955682586936
x67 = -81.9955682586936
x68 = -43.6681378848981
x69 = -69.4291976443344
x70 = -9.73893722612836
x71 = -53.0929158456675
x72 = 5.96902604182061
x73 = 88.2787535658732
x74 = 2.19911485751286
x75 = -48.0663675999238
x76 = 88.9070720965912
x77 = -95.8185759344887
x78 = 49.9513231920777
x79 = -26.0752190247953
x80 = -70.0575161750524
x81 = -73.8274273593601
x82 = 65.0309679293087
x83 = 70.0575161750524
x84 = 26.0752190247953
x85 = -97.7035315266426
x86 = 44.2964564156161
x87 = 21.0486707790516
x88 = 100.216805649514
x89 = 76.340701482232
x90 = 48.0663675999238
x91 = -39.8982267005904
x92 = 54.3495529071034
x93 = 7.22566310325652
x94 = 22.3053078404875
x95 = -65.6592864600267
x96 = -27.9601746169492
x96 = -27.9601746169492