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cos(pi*(4*x-6)/3)=1/2

cos(pi*(4*x-6)/3)=1/2 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
   /pi*(4*x - 6)\      
cos|------------| = 1/2
   \     3      /      
$$\cos{\left(\frac{\pi \left(4 x - 6\right)}{3} \right)} = \frac{1}{2}$$
Solución detallada
Tenemos la ecuación
$$\cos{\left(\frac{\pi \left(4 x - 6\right)}{3} \right)} = \frac{1}{2}$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$\frac{4 \pi x}{3} = \pi n + \operatorname{acos}{\left(\frac{1}{2} \right)}$$
$$\frac{4 \pi x}{3} = \pi n - \pi + \operatorname{acos}{\left(\frac{1}{2} \right)}$$
O
$$\frac{4 \pi x}{3} = \pi n + \frac{\pi}{3}$$
$$\frac{4 \pi x}{3} = \pi n - \frac{2 \pi}{3}$$
, donde n es cualquier número entero
Dividamos ambos miembros de la ecuación obtenida en
$$\frac{4 \pi}{3}$$
obtenemos la respuesta:
$$x_{1} = \frac{3 \left(\pi n + \frac{\pi}{3}\right)}{4 \pi}$$
$$x_{2} = \frac{3 \left(\pi n - \frac{2 \pi}{3}\right)}{4 \pi}$$
Gráfica
Respuesta rápida [src]
x1 = 1/4
$$x_{1} = \frac{1}{4}$$
x2 = 5/4
$$x_{2} = \frac{5}{4}$$
x2 = 5/4
Suma y producto de raíces [src]
suma
1/4 + 5/4
$$\frac{1}{4} + \frac{5}{4}$$
=
3/2
$$\frac{3}{2}$$
producto
 5 
---
4*4
$$\frac{5}{4 \cdot 4}$$
=
5/16
$$\frac{5}{16}$$
5/16
Respuesta numérica [src]
x1 = -71.75
x2 = -85.75
x3 = 88.25
x4 = -47.75
x5 = 24.25
x6 = 7.75
x7 = -34.25
x8 = -13.75
x9 = -1.75
x10 = -59.75
x11 = 52.25
x12 = 31.75
x13 = 72.25
x14 = 84.25
x15 = -100.25
x16 = 58.25
x17 = 0.25
x18 = 48.25
x19 = 22.25
x20 = 30.25
x21 = 73.75
x22 = 61.75
x23 = 66.25
x24 = -4.25
x25 = 13.75
x26 = 78.25
x27 = 79.75
x28 = -11.75
x29 = 82.25
x30 = -22.25
x31 = -76.25
x32 = 12.25
x33 = -16.25
x34 = 40.25
x35 = -25.75
x36 = -94.25
x37 = -53.75
x38 = 18.25
x39 = -35.75
x40 = -89.75
x41 = -29.75
x42 = -31.75
x43 = -83.75
x44 = -46.25
x45 = -28.25
x46 = -61.75
x47 = -65.75
x48 = 34.25
x49 = 90.25
x50 = -5.75
x51 = -58.25
x52 = 43.75
x53 = 4.25
x54 = -95.75
x55 = -79.75
x56 = 37.75
x57 = 54.25
x58 = -97.75
x59 = 96.25
x60 = 64.25
x61 = -10.25
x62 = -17.75
x63 = -77.75
x64 = 91.75
x65 = -55.75
x66 = 85.75
x67 = -82.25
x68 = -88.25
x69 = 55.75
x70 = 46.25
x71 = 42.25
x72 = 6.25
x73 = -40.25
x74 = 36.25
x75 = 94.25
x76 = 16.25
x77 = -49.75
x78 = -52.25
x79 = 19.75
x80 = -19.75
x81 = 28.25
x82 = -23.75
x83 = -64.25
x84 = 25.75
x85 = -73.75
x86 = 100.25
x87 = 70.25
x88 = 1.75
x89 = -41.75
x90 = 49.75
x91 = -37.75
x92 = 76.25
x93 = -7.75
x94 = 60.25
x95 = 67.75
x96 = 97.75
x97 = -70.25
x98 = 10.25
x99 = -43.75
x100 = -91.75
x101 = -67.75
x101 = -67.75
Gráfico
cos(pi*(4*x-6)/3)=1/2 la ecuación