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sin(3*x)=-1/2

sin(3*x)=-1/2 la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
sin(3*x) = -1/2
$$\sin{\left(3 x \right)} = - \frac{1}{2}$$
Solución detallada
Tenemos la ecuación
$$\sin{\left(3 x \right)} = - \frac{1}{2}$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$3 x = 2 \pi n + \operatorname{asin}{\left(- \frac{1}{2} \right)}$$
$$3 x = 2 \pi n - \operatorname{asin}{\left(- \frac{1}{2} \right)} + \pi$$
O
$$3 x = 2 \pi n - \frac{\pi}{6}$$
$$3 x = 2 \pi n + \frac{7 \pi}{6}$$
, donde n es cualquier número entero
Dividamos ambos miembros de la ecuación obtenida en
$$3$$
obtenemos la respuesta:
$$x_{1} = \frac{2 \pi n}{3} - \frac{\pi}{18}$$
$$x_{2} = \frac{2 \pi n}{3} + \frac{7 \pi}{18}$$
Gráfica
Respuesta rápida [src]
     -pi 
x1 = ----
      18 
$$x_{1} = - \frac{\pi}{18}$$
     7*pi
x2 = ----
      18 
$$x_{2} = \frac{7 \pi}{18}$$
x2 = 7*pi/18
Suma y producto de raíces [src]
suma
  pi   7*pi
- -- + ----
  18    18 
$$- \frac{\pi}{18} + \frac{7 \pi}{18}$$
=
pi
--
3 
$$\frac{\pi}{3}$$
producto
-pi  7*pi
----*----
 18   18 
$$- \frac{\pi}{18} \frac{7 \pi}{18}$$
=
     2
-7*pi 
------
 324  
$$- \frac{7 \pi^{2}}{324}$$
-7*pi^2/324
Respuesta numérica [src]
x1 = -16.929693744345
x2 = 85.6956662729216
x3 = 26.3544717051144
x4 = 41.7133691226645
x5 = 94.0732466824944
x6 = 24.2600766027212
x7 = 17.9768912955416
x8 = -65.7989128001862
x9 = -88.1391272257137
x10 = 15.8824961931484
x11 = -77.6671517137477
x12 = -21.8166156499291
x13 = -59.5157274930066
x14 = -19.7222205475359
x15 = -72.0820981073658
x16 = 91.9788515801012
x17 = 33.3357887130917
x18 = -90.2335223281068
x19 = -39.9680398706701
x20 = 22.165681500328
x21 = -63.704517697793
x22 = -4.36332312998582
x23 = 68.2423737529783
x24 = 76.6199541625511
x25 = 47.9965544298441
x26 = -48.3456202802429
x27 = -11.3446401379631
x28 = -26.0054058547155
x29 = -81.8559419185341
x30 = 96.1676417848876
x31 = -54.6288055874225
x32 = 4.01425727958696
x33 = 30.5432619099008
x34 = -86.0447321233204
x35 = -79.7615468161409
x36 = 10.2974425867665
x37 = 70.3367688553715
x38 = -17.6278254451427
x39 = -98.6111027376796
x40 = 6.10865238198015
x41 = 61.9591884457987
x42 = 72.4311639577647
x43 = 646.2954220135
x44 = -31.5904594610974
x45 = 66.1479786505851
x46 = 98.2620368872808
x47 = -13.4390352403563
x48 = -83.9503370209273
x49 = 56.3741348394168
x50 = -7.15584993317675
x51 = 32.637657012294
x52 = 54.2797397370236
x53 = -75.5727566113545
x54 = 64.0535835481919
x55 = -44.1568300754565
x56 = 28.4488668075076
x57 = 20.0712863979348
x58 = -28.0998009571087
x59 = 50.0909495322373
x60 = -67.8933079025794
x61 = 87.7900613753148
x62 = -2.26892802759263
x63 = -92.3279174305
x64 = 77.3180858633488
x65 = 45.9021593274509
x66 = 89.884456477708
x67 = -35.7792496658838
x68 = -61.6101225953998
x69 = -42.0624349730633
x70 = 100.356431989674
x71 = 12.3918376891597
x72 = 39.6189740202713
x73 = 8.20304748437335
x74 = -57.4213323906134
x75 = 59.8647933434055
x76 = -23.9110107523223
x77 = -74.176493209759
x78 = 43.8077642250577
x79 = 74.5255590601579
x80 = -0.174532925199433
x81 = -33.6848545634906
x82 = -37.873644768277
x83 = 52.1853446346305
x84 = 1.91986217719376
x85 = -51.1381470834339
x86 = -69.9877030049726
x87 = -46.2512251778497
x88 = 83.6012711705284
x89 = -15.5334303427495
x89 = -15.5334303427495
Gráfico
sin(3*x)=-1/2 la ecuación