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cos(4*x/3)=-1 la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
   /4*x\     
cos|---| = -1
   \ 3 /     
$$\cos{\left(\frac{4 x}{3} \right)} = -1$$
Solución detallada
Tenemos la ecuación
$$\cos{\left(\frac{4 x}{3} \right)} = -1$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$\frac{4 x}{3} = \pi n + \operatorname{acos}{\left(-1 \right)}$$
$$\frac{4 x}{3} = \pi n - \pi + \operatorname{acos}{\left(-1 \right)}$$
O
$$\frac{4 x}{3} = \pi n + \pi$$
$$\frac{4 x}{3} = \pi n$$
, donde n es cualquier número entero
Dividamos ambos miembros de la ecuación obtenida en
$$\frac{4}{3}$$
obtenemos la respuesta:
$$x_{1} = \frac{3 \pi n}{4} + \frac{3 \pi}{4}$$
$$x_{2} = \frac{3 \pi n}{4}$$
Gráfica
Suma y producto de raíces [src]
suma
3*pi
----
 4  
$$\frac{3 \pi}{4}$$
=
3*pi
----
 4  
$$\frac{3 \pi}{4}$$
producto
3*pi
----
 4  
$$\frac{3 \pi}{4}$$
=
3*pi
----
 4  
$$\frac{3 \pi}{4}$$
3*pi/4
Respuesta rápida [src]
     3*pi
x1 = ----
      4  
$$x_{1} = \frac{3 \pi}{4}$$
x1 = 3*pi/4
Respuesta numérica [src]
x1 = 96.6039739120073
x2 = 91.891585204191
x3 = -58.9048626047426
x4 = 77.7544179589731
x5 = 30.6305286989278
x6 = 54.1924733268298
x7 = -7.06858308346492
x8 = 68.3296401642908
x9 = -25.9181384723536
x10 = -44.7676949665655
x11 = -49.4800844422685
x12 = 44.7676956868728
x13 = 16.4933612955528
x14 = 21.2057500423631
x15 = -68.3296400178503
x16 = -54.1924731412659
x17 = 21.2057495519097
x18 = 7.06858384773902
x19 = -35.3429170137919
x20 = -68.3296405103949
x21 = 49.4800839241603
x22 = -87.1791964083403
x23 = -16.4933617959957
x24 = -73.0420288094863
x25 = -73.0420295112868
x26 = 40.0553072266467
x27 = -96.6039737963203
x28 = 49.4800845672033
x29 = 101.316362698969
x30 = -11.7809724257433
x31 = 73.0420299785381
x32 = 91.8915851668429
x33 = -82.4668069031018
x34 = 2.35619443411272
x35 = -16.4933611677997
x36 = 35.3429176707105
x37 = -77.7544174704278
x38 = -30.6305280626354
x39 = -77.7544181730284
x40 = -7.06858377804593
x41 = -11.7809731915233
x42 = 82.466807336549
x43 = 35.3429169729007
x44 = -101.316362728482
x45 = 25.918139529509
x46 = 73.0420295762661
x47 = 87.1791964958321
x48 = -181.426976116041
x49 = 2.35619442394629
x50 = 11.7809725974576
x51 = -44.7676956863599
x52 = 96.6039744093737
x53 = -2.35619428102603
x54 = 54.1924723716301
x55 = 11.7809722680351
x56 = -91.8915845716186
x57 = 82.4668070336574
x58 = 87.1791957716291
x59 = -54.192473416367
x60 = 58.9048626418538
x61 = 44.7676950616902
x62 = -40.0553062820739
x63 = -87.1791957555443
x64 = 40.0553062101265
x65 = 73.042028858174
x66 = 68.3296400700416
x67 = -21.2057506734671
x68 = 157.865031294928
x69 = -54.1924727793798
x70 = -40.0553060893783
x71 = -82.4668075148057
x72 = -44.7676964637337
x73 = -25.9181396789679
x74 = -63.6172512172506
x75 = -49.4800840496387
x76 = 63.6172509089114
x77 = -63.6172513157763
x78 = -58.9048618813107
x79 = -21.2057500337999
x80 = -30.6305287524088
x81 = 58.9048619555352
x82 = 63.6172514554979
x83 = 7.06858312650548
x84 = -77.7544187415387
x85 = -35.3429175612615
x86 = 21.2057507648425
x87 = 25.9181394619834
x88 = 77.7544183357283
x89 = -2.35619480207502
x90 = -96.6039744768976
x91 = 30.6305281752487
x92 = 16.4933616461792
x92 = 16.4933616461792