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4*sin(2*x+pi/4)+3=-1 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
     /      pi\         
4*sin|2*x + --| + 3 = -1
     \      4 /         
$$4 \sin{\left(2 x + \frac{\pi}{4} \right)} + 3 = -1$$
Solución detallada
Tenemos la ecuación
$$4 \sin{\left(2 x + \frac{\pi}{4} \right)} + 3 = -1$$
es la ecuación trigonométrica más simple
Dividamos ambos miembros de la ecuación en 4

La ecuación se convierte en
$$\sin{\left(2 x + \frac{\pi}{4} \right)} = -1$$
Esta ecuación se reorganiza en
$$2 x + \frac{\pi}{4} = 2 \pi n + \operatorname{asin}{\left(-1 \right)}$$
$$2 x + \frac{\pi}{4} = 2 \pi n - \operatorname{asin}{\left(-1 \right)} + \pi$$
O
$$2 x + \frac{\pi}{4} = 2 \pi n - \frac{\pi}{2}$$
$$2 x + \frac{\pi}{4} = 2 \pi n + \frac{3 \pi}{2}$$
, donde n es cualquier número entero
Transportemos
$$\frac{\pi}{4}$$
al miembro derecho de la ecuación
con el signo opuesto, en total:
$$2 x = 2 \pi n - \frac{3 \pi}{4}$$
$$2 x = 2 \pi n + \frac{5 \pi}{4}$$
Dividamos ambos miembros de la ecuación obtenida en
$$2$$
obtenemos la respuesta:
$$x_{1} = \pi n - \frac{3 \pi}{8}$$
$$x_{2} = \pi n + \frac{5 \pi}{8}$$
Gráfica
Respuesta rápida [src]
     -3*pi
x1 = -----
       8  
$$x_{1} = - \frac{3 \pi}{8}$$
     5*pi
x2 = ----
      8  
$$x_{2} = \frac{5 \pi}{8}$$
x2 = 5*pi/8
Suma y producto de raíces [src]
suma
  3*pi   5*pi
- ---- + ----
   8      8  
$$- \frac{3 \pi}{8} + \frac{5 \pi}{8}$$
=
pi
--
4 
$$\frac{\pi}{4}$$
producto
-3*pi 5*pi
-----*----
  8    8  
$$- \frac{3 \pi}{8} \frac{5 \pi}{8}$$
=
      2
-15*pi 
-------
   64  
$$- \frac{15 \pi^{2}}{64}$$
-15*pi^2/64
Respuesta numérica [src]
x1 = -57.7267650260835
x2 = 3152.98092671268
x3 = 33.3794223271418
x4 = -7.46128270373216
x5 = 36.5210144538478
x6 = -13.7444678635091
x7 = 52.2289778824971
x8 = 33.3794221988598
x9 = -60.8683578737352
x10 = 36.5210146593677
x11 = 67.9369411904282
x12 = 55.3705707746673
x13 = -73.4347284397213
x14 = -54.5851721053455
x15 = 99.3528679259715
x16 = -16.8860603040737
x17 = -51.4435798611094
x18 = 27.0962368349121
x19 = 45.9457926088676
x20 = -42.0188017215201
x21 = 39.662607441135
x22 = -45.1603946357587
x23 = 99.352867898973
x24 = 61.6537560193629
x25 = 58.5121630327133
x26 = 71.0785339719069
x27 = -86.0010988907094
x28 = 86.7864968249862
x29 = 30.2378293001422
x30 = -38.8772093032171
x31 = 5.10508783896564
x32 = -20.0276531381327
x33 = 96.2112750486502
x34 = -76.576320681629
x35 = -23.16924605918
x36 = 14.5298658750326
x37 = 49.0873854036793
x38 = 20.8130510942383
x39 = -92.2842840295262
x40 = 1.96349544466012
x41 = 8.24668071815984
x42 = 64.7953482479901
x43 = 71.0785335547384
x44 = 11.3882736229523
x45 = 77.3617193503721
x46 = -82.8595060156598
x47 = 77.361719371007
x48 = -60.8683574447573
x49 = -98.5674692580012
x50 = -89.1426917886436
x51 = 49.08738498251
x52 = -82.8595064438321
x53 = 93.0696821272461
x54 = 17.6714588628454
x55 = 27.096236410579
x56 = -64.0099503056466
x57 = -16.8860607323079
x58 = 42.8041999044596
x59 = 23.9546440269661
x60 = -48.3019868723927
x61 = 42.8041996710735
x62 = -70.2931354509285
x63 = -35.7356164449111
x64 = -26.3108382939185
x65 = 93.0696825395472
x66 = 74.2201264653002
x67 = -38.8772088742192
x68 = 89.928089771698
x69 = -1.17809748251362
x70 = -4.31968971550582
x71 = 83.644904597529
x72 = 80.5033116116291
x73 = -29.4524312824463
x74 = -10.6028749530527
x75 = 55.3705708471309
x76 = 5.10508826564833
x77 = -32.5940235291527
x78 = -67.1515432122474
x79 = -95.4258770182816
x80 = 83.6449040460627
x81 = -79.7179136070564
x81 = -79.7179136070564