Sr Examen

Otras calculadoras


cos(pi*x/3)=1/2

cos(pi*x/3)=1/2 la ecuación

El profesor se sorprenderá mucho al ver tu solución correcta😉

v

Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
   /pi*x\      
cos|----| = 1/2
   \ 3  /      
$$\cos{\left(\frac{\pi x}{3} \right)} = \frac{1}{2}$$
Solución detallada
Tenemos la ecuación
$$\cos{\left(\frac{\pi x}{3} \right)} = \frac{1}{2}$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$\frac{\pi x}{3} = \pi n + \operatorname{acos}{\left(\frac{1}{2} \right)}$$
$$\frac{\pi x}{3} = \pi n - \pi + \operatorname{acos}{\left(\frac{1}{2} \right)}$$
O
$$\frac{\pi x}{3} = \pi n + \frac{\pi}{3}$$
$$\frac{\pi x}{3} = \pi n - \frac{2 \pi}{3}$$
, donde n es cualquier número entero
Dividamos ambos miembros de la ecuación obtenida en
$$\frac{\pi}{3}$$
obtenemos la respuesta:
$$x_{1} = \frac{3 \left(\pi n + \frac{\pi}{3}\right)}{\pi}$$
$$x_{2} = \frac{3 \left(\pi n - \frac{2 \pi}{3}\right)}{\pi}$$
Gráfica
Respuesta rápida [src]
x1 = 1
$$x_{1} = 1$$
x2 = 5
$$x_{2} = 5$$
x2 = 5
Suma y producto de raíces [src]
suma
1 + 5
$$1 + 5$$
=
6
$$6$$
producto
5
$$5$$
=
5
$$5$$
5
Respuesta numérica [src]
x1 = -53.0
x2 = -37.0
x3 = 29.0
x4 = 89.0
x5 = 77.0
x6 = -83.0
x7 = -1.0
x8 = -11.0
x9 = 55.0
x10 = -19.0
x11 = 61.0
x12 = -49.0
x13 = 7.0
x14 = -29.0
x15 = -35.0
x16 = -95.0
x17 = -43.0
x18 = 59.0
x19 = 17.0
x20 = 23.0
x21 = -71.0
x22 = -25.0
x23 = -91.0
x24 = 25.0
x25 = -7.0
x26 = -67.0
x27 = 53.0
x28 = 13.0
x29 = 97.0
x30 = -79.0
x31 = -59.0
x32 = 37.0
x33 = 19.0
x34 = -13.0
x35 = -31.0
x36 = 95.0
x37 = 47.0
x38 = 91.0
x39 = -47.0
x40 = 43.0
x41 = -65.0
x42 = 1.0
x43 = -61.0
x44 = 35.0
x45 = 5.0
x46 = -5.0
x47 = 85.0
x48 = -17.0
x49 = 71.0
x50 = 101.0
x51 = 65.0
x52 = 11.0
x53 = -89.0
x54 = -97.0
x55 = -77.0
x56 = -23.0
x57 = 83.0
x58 = 41.0
x59 = 49.0
x60 = 73.0
x61 = -85.0
x62 = -73.0
x63 = -55.0
x64 = 79.0
x65 = -101.0
x66 = 31.0
x67 = 67.0
x68 = -41.0
x68 = -41.0
Gráfico
cos(pi*x/3)=1/2 la ecuación