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cos((Pi/9)-4x)=1 la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
   /pi      \    
cos|-- - 4*x| = 1
   \9       /    
$$\cos{\left(- 4 x + \frac{\pi}{9} \right)} = 1$$
Solución detallada
Tenemos la ecuación
$$\cos{\left(- 4 x + \frac{\pi}{9} \right)} = 1$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$4 x + \frac{7 \pi}{18} = 2 \pi n + \operatorname{asin}{\left(1 \right)}$$
$$4 x + \frac{7 \pi}{18} = 2 \pi n - \operatorname{asin}{\left(1 \right)} + \pi$$
O
$$4 x + \frac{7 \pi}{18} = 2 \pi n + \frac{\pi}{2}$$
$$4 x + \frac{7 \pi}{18} = 2 \pi n + \frac{\pi}{2}$$
, donde n es cualquier número entero
Transportemos
$$\frac{7 \pi}{18}$$
al miembro derecho de la ecuación
con el signo opuesto, en total:
$$4 x = 2 \pi n + \frac{\pi}{9}$$
$$4 x = 2 \pi n + \frac{\pi}{9}$$
Dividamos ambos miembros de la ecuación obtenida en
$$4$$
obtenemos la respuesta:
$$x_{1} = \frac{\pi n}{2} + \frac{\pi}{36}$$
$$x_{2} = \frac{\pi n}{2} + \frac{\pi}{36}$$
Gráfica
Respuesta rápida [src]
     pi
x1 = --
     36
$$x_{1} = \frac{\pi}{36}$$
x1 = pi/36
Suma y producto de raíces [src]
suma
pi
--
36
$$\frac{\pi}{36}$$
=
pi
--
36
$$\frac{\pi}{36}$$
producto
pi
--
36
$$\frac{\pi}{36}$$
=
pi
--
36
$$\frac{\pi}{36}$$
pi/36
Respuesta numérica [src]
x1 = -72.1693644656717
x2 = 64.4899157508705
x3 = 86.4810643279505
x4 = 15.7952298446077
x5 = -14.049900432901
x6 = 12.6536369900585
x7 = -72.1693648950812
x8 = -64.3153828137022
x9 = 100.618231270209
x10 = 37.7863784216865
x11 = -50.1782158878097
x12 = 14.2244334242509
x13 = 36.2155820073397
x14 = -67.4569757069933
x15 = -89.4481242823959
x16 = 73.9146938899713
x17 = 34.6447855586004
x18 = 78.6270826988203
x19 = -51.7490123223636
x20 = -50.1782159947367
x21 = 58.2067305910165
x22 = 22.0784149665373
x23 = 7.94124814835801
x24 = -73.7401609038844
x25 = 1.65806290699436
x26 = 29.9323967292291
x27 = -75.3109572683443
x28 = 23.6492114797134
x29 = -43.8950303690659
x30 = 56.6359341282408
x31 = -59.602994036852
x32 = 97.4766384139647
x33 = -53.3198087067381
x34 = -86.3065313879892
x35 = 81.7686755752369
x36 = 6.37045169996086
x37 = 50.3527488585529
x38 = 59.7775269985642
x39 = -15.6206968791201
x40 = 66.0607120362936
x41 = 45.6403600519256
x42 = -12.4791042131093
x43 = -37.611845458058
x44 = 42.4987671739903
x45 = 80.197879175411
x46 = 67.6315086235637
x47 = -81.5941426155007
x48 = 88.0518606536713
x49 = 31.5031928515163
x50 = -95.7313094851324
x51 = 70.7731014780795
x52 = -94.1605130437285
x53 = 9.5120443231479
x54 = 92.7642500048763
x55 = -12.4791042029249
x56 = 53.4943413718914
x57 = 48.7819528362493
x58 = -97.3021058272143
x59 = -6.19591873266924
x60 = 89.6226571945447
x61 = -28.1870673101421
x62 = 51.9235453097555
x63 = 94.3350460177276
x64 = -29.7578637405335
x65 = 0.0872667782384371
x66 = -20.3330856661766
x67 = -100.443698415653
x68 = -31.3286601428889
x69 = 20.5076185973203
x70 = 95.9058424699032
x71 = -23.4746785553399
x72 = -45.465827131301
x73 = 28.361600279185
x74 = 75.4854898875476
x75 = -56.4614013050312
x76 = -58.0321975968207
x77 = -36.0410490146034
x78 = -42.3242342397544
x79 = -9.33751157718683
x80 = -7.76671515834831
x81 = 44.0695634005613
x82 = -78.452549858469
x83 = 72.3438974380663
x84 = -1.48352997912758
x85 = -80.0233461796468
x86 = -34.4702527562253
x86 = -34.4702527562253