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2cosx-√2=0 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
             ___    
2*cos(x) - \/ 2  = 0
$$2 \cos{\left(x \right)} - \sqrt{2} = 0$$
Solución detallada
Tenemos la ecuación
$$2 \cos{\left(x \right)} - \sqrt{2} = 0$$
es la ecuación trigonométrica más simple
Transportemos -sqrt(2) al miembro derecho de la ecuación

cambiando el signo de -sqrt(2)

Obtenemos:
$$2 \cos{\left(x \right)} = \sqrt{2}$$
Dividamos ambos miembros de la ecuación en 2

La ecuación se convierte en
$$\cos{\left(x \right)} = \frac{\sqrt{2}}{2}$$
Esta ecuación se reorganiza en
$$x = \pi n + \operatorname{acos}{\left(\frac{\sqrt{2}}{2} \right)}$$
$$x = \pi n - \pi + \operatorname{acos}{\left(\frac{\sqrt{2}}{2} \right)}$$
O
$$x = \pi n + \frac{\pi}{4}$$
$$x = \pi n - \frac{3 \pi}{4}$$
, donde n es cualquier número entero
Gráfica
Respuesta rápida [src]
     pi
x1 = --
     4 
$$x_{1} = \frac{\pi}{4}$$
     7*pi
x2 = ----
      4  
$$x_{2} = \frac{7 \pi}{4}$$
x2 = 7*pi/4
Suma y producto de raíces [src]
suma
pi   7*pi
-- + ----
4     4  
$$\frac{\pi}{4} + \frac{7 \pi}{4}$$
=
2*pi
$$2 \pi$$
producto
pi 7*pi
--*----
4   4  
$$\frac{\pi}{4} \frac{7 \pi}{4}$$
=
    2
7*pi 
-----
  16 
$$\frac{7 \pi^{2}}{16}$$
7*pi^2/16
Respuesta numérica [src]
x1 = -99.7455667514759
x2 = -0.785398163397448
x3 = -24.3473430653209
x4 = -30.6305283725005
x5 = 76.1836218495525
x6 = -38.484510006475
x7 = -5.49778714378214
x8 = -62.0464549083984
x9 = 18.0641577581413
x10 = -36.9137136796801
x11 = -87.1791961371168
x12 = 24.3473430653209
x13 = 95.0331777710912
x14 = 38.484510006475
x15 = 80.8960108299372
x16 = -101.316363078271
x17 = 99.7455667514759
x18 = -69.9004365423729
x19 = 51.0508806208341
x20 = -43.1968989868597
x21 = 87.1791961371168
x22 = 0.785398163397448
x23 = -19.6349540849362
x24 = 49.4800842940392
x25 = 69.9004365423729
x26 = 30.6305283725005
x27 = -13.3517687777566
x28 = 13.3517687777566
x29 = 88.7499924639117
x30 = -68.329640215578
x31 = -82.4668071567321
x32 = -63.6172512351933
x33 = -11.7809724509617
x34 = 36.9137136796801
x35 = -351.072979038659
x36 = 11.7809724509617
x37 = -162.577419823272
x38 = -55.7632696012188
x39 = 19.6349540849362
x40 = -88.7499924639117
x41 = -76.1836218495525
x42 = 82.4668071567321
x43 = 62.0464549083984
x44 = -93.4623814442964
x45 = 68.329640215578
x46 = -32.2013246992954
x47 = 44.7676953136546
x48 = -7.06858347057703
x49 = 55.7632696012188
x50 = -49.4800842940392
x51 = -74.6128255227576
x52 = 32.2013246992954
x53 = 57.3340659280137
x54 = 63.6172512351933
x55 = -95.0331777710912
x56 = 43.1968989868597
x57 = 5.49778714378214
x58 = 25.9181393921158
x59 = -57.3340659280137
x60 = -51.0508806208341
x61 = 93.4623814442964
x62 = -25.9181393921158
x63 = -182.997772071605
x64 = 74.6128255227576
x65 = -80.8960108299372
x66 = 7.06858347057703
x67 = -18.0641577581413
x68 = -44.7676953136546
x68 = -44.7676953136546