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- La ecuación:
- Ecuación x+y-3=0
-
Ecuación x^2=-3
-
Ecuación 3^x=-1
-
Ecuación x-11=-7
- Expresar {x} en función de y en la ecuación:
- 4*x+8*y=7
- -12*x+20*y=-3
- -5*x-13*y=-4
- -13*x-7*y=16
-
Expresiones idénticas
- cos(x)-sin(dos *x)= cero
- coseno de (x) menos seno de (2 multiplicar por x) es igual a 0
- coseno de (x) menos seno de (dos multiplicar por x) es igual a cero
- cos(x)-sin(2x)=0
- cosx-sin2x=0
- cos(x)-sin(2*x)=O
-
Expresiones semejantes
- (cosx-sin2x)*(1+sqrt(tgx))=0
- cos(x)+sin(2*x)=0
- sin2xcos2x+2cos2xsinxcosx-sin2xsin^2x=0
- 2cos^3x-2cosx-sin^2x=0
- cos(x)-sin(2x)=0
- cosx-sin(2*x)=0
-
Expresiones con funciones
- Coseno cos
- cos(x)=-1,1
- cos(pi*x)/(x-2)=1/(x-2)
- cos(x+pi/2)=sqrt(3)/2
- cos(x)=(2)/2
- cos(x)=4/3
- Seno sin
- sin(x)=-1/7
- sin(x)=-6
- sin(5*x)-cos(4*x)=0
- sin(x)=-sqrt(2)/2
- sin(2*x+pi/2)=0
cos(x)-sin(2*x)=0 la ecuación
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
Ha introducido
[src]
cos(x) - sin(2*x) = 0
$$- \sin{\left(2 x \right)} + \cos{\left(x \right)} = 0$$
Suma y producto de raíces
[src]
suma
pi pi pi 5*pi - -- + -- + -- + ---- 2 6 2 6
$$\left(\left(- \frac{\pi}{2} + \frac{\pi}{6}\right) + \frac{\pi}{2}\right) + \frac{5 \pi}{6}$$
=
pi
$$\pi$$
producto
-pi pi pi 5*pi ----*--*--*---- 2 6 2 6
$$\frac{5 \pi}{6} \frac{\pi}{2} \cdot - \frac{\pi}{2} \frac{\pi}{6}$$
=
4 -5*pi ------ 144
$$- \frac{5 \pi^{4}}{144}$$
-5*pi^4/144
Respuesta rápida
[src]
-pi
x1 = ----
2
$$x_{1} = - \frac{\pi}{2}$$
pi
x2 = --
6
$$x_{2} = \frac{\pi}{6}$$
pi
x3 = --
2
$$x_{3} = \frac{\pi}{2}$$
5*pi
x4 = ----
6
$$x_{4} = \frac{5 \pi}{6}$$
x4 = 5*pi/6
Respuesta numérica
[src]
x1 = 4.71238898038469
x2 = -3.66519142918809
x3 = 38.2227106186758
x4 = 88.4881930761125
x5 = -80.1106126665397
x6 = -9.94837673636768
x7 = -56.025068989018
x8 = -16.2315620435473
x9 = -2937.91272988205
x10 = -23.5619449019235
x11 = -73.8274273593601
x12 = -36.1283155162826
x13 = -97.9129710368819
x14 = 86.3937979737193
x15 = -53.9306738866248
x16 = 102.101761241668
x17 = -100.007366139275
x18 = -39.2699081698724
x19 = 48.6946861306418
x20 = -64.4026493985908
x21 = -20.4203522483337
x22 = -81.1578102177363
x23 = 42.4115008234622
x24 = -67.5442420521806
x25 = 14.1371669411541
x26 = -7.85398163397448
x27 = 80.1106126665397
x28 = -91.6297857297023
x29 = 34.0339204138894
x30 = -29.845130209103
x31 = -12.0427718387609
x32 = -83.2522053201295
x33 = 82.2050077689329
x34 = -47.6474885794452
x35 = 57.0722665402146
x36 = -37.1755130674792
x37 = 23.5619449019235
x38 = 75.9218224617533
x39 = 51.8362787842316
x40 = -49.7418836818384
x41 = 95.8185759344887
x42 = -95.8185759344887
x43 = -17.2787595947439
x44 = 44.5058959258554
x45 = 27.7507351067098
x46 = -93.7241808320955
x47 = -72.7802298081635
x48 = -4.71238898038469
x49 = -66.497044500984
x50 = 94.7713783832921
x51 = 58.1194640914112
x52 = 29.845130209103
x53 = -43.4586983746588
x54 = 21.4675497995303
x55 = 6.80678408277789
x56 = 92.6769832808989
x57 = 50.789081233035
x58 = -87.4409955249159
x59 = -58.1194640914112
x60 = 36.1283155162826
x61 = -45.553093477052
x62 = 67.5442420521806
x63 = 78.0162175641465
x64 = 0.523598775598299
x65 = -42.4115008234622
x66 = -14.1371669411541
x67 = 31.9395253114962
x68 = -5.75958653158129
x69 = 65.4498469497874
x70 = 20.4203522483337
x71 = 84.2994028713261
x72 = -22.5147473507269
x73 = -60.2138591938044
x74 = -51.8362787842316
x75 = 64.4026493985908
x76 = 40.317105721069
x77 = 73.8274273593601
x78 = -1.5707963267949
x79 = 71.733032256967
x80 = 7.85398163397448
x81 = -89.5353906273091
x81 = -89.5353906273091
Gráfico