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- La ecuación:
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Ecuación 2x^2-x-1=x^2-5x-(-1-x^2)
-
Ecuación x(x^2+2x+1)=6(x+1)
-
Ecuación 4x+1=-3x+15
- Ecuación (3x−36)⋅(x+8)=0
- Expresar {x} en función de y en la ecuación:
- -6*x-20*y=8
- 13*x-12*y=19
- -9*x+11*y=9
- -4*x-8*y=-20
-
Expresiones idénticas
- cos^ dos x-3sinxcosx+2sin^2x=2
- coseno de al cuadrado x menos 3 seno de x coseno de x más 2 seno de al cuadrado x es igual a 2
- coseno de en el grado dos x menos 3 seno de x coseno de x más 2 seno de al cuadrado x es igual a 2
- cos2x-3sinxcosx+2sin2x=2
- cos²x-3sinxcosx+2sin²x=2
- cos en el grado 2x-3sinxcosx+2sin en el grado 2x=2
-
Expresiones semejantes
- cos^2x+3sinxcosx+2sin^2x=2
- cos^2x-3sinxcosx-2sin^2x=2
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Expresiones con funciones
- Coseno cos
- cos(x)=-(4/5)
- cos(x+(pi/6))=-1
- cos(3*x)=1
- cos(x)=-3/2
- cos(x)=1/2
cos^2x-3sinxcosx+2sin^2x=2 la ecuación
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
Ha introducido
[src]
2 2 cos (x) - 3*sin(x)*cos(x) + 2*sin (x) = 2
$$\left(- 3 \sin{\left(x \right)} \cos{\left(x \right)} + \cos^{2}{\left(x \right)}\right) + 2 \sin^{2}{\left(x \right)} = 2$$
Suma y producto de raíces
[src]
suma
pi pi / ____\ / ____\ - -- + -- + 2*atan\3 - \/ 10 / + 2*atan\3 + \/ 10 / 2 2
$$\left(2 \operatorname{atan}{\left(3 - \sqrt{10} \right)} + \left(- \frac{\pi}{2} + \frac{\pi}{2}\right)\right) + 2 \operatorname{atan}{\left(3 + \sqrt{10} \right)}$$
=
/ ____\ / ____\ 2*atan\3 + \/ 10 / + 2*atan\3 - \/ 10 /
$$2 \operatorname{atan}{\left(3 - \sqrt{10} \right)} + 2 \operatorname{atan}{\left(3 + \sqrt{10} \right)}$$
producto
-pi pi / ____\ / ____\ ----*--*2*atan\3 - \/ 10 /*2*atan\3 + \/ 10 / 2 2
$$- \frac{\pi}{2} \frac{\pi}{2} \cdot 2 \operatorname{atan}{\left(3 - \sqrt{10} \right)} 2 \operatorname{atan}{\left(3 + \sqrt{10} \right)}$$
=
2 / ____\ / ____\ -pi *atan\3 + \/ 10 /*atan\3 - \/ 10 /
$$- \pi^{2} \operatorname{atan}{\left(3 - \sqrt{10} \right)} \operatorname{atan}{\left(3 + \sqrt{10} \right)}$$
-pi^2*atan(3 + sqrt(10))*atan(3 - sqrt(10))
Respuesta rápida
[src]
-pi
x1 = ----
2
$$x_{1} = - \frac{\pi}{2}$$
pi
x2 = --
2
$$x_{2} = \frac{\pi}{2}$$
/ ____\ x3 = 2*atan\3 - \/ 10 /
$$x_{3} = 2 \operatorname{atan}{\left(3 - \sqrt{10} \right)}$$
/ ____\ x4 = 2*atan\3 + \/ 10 /
$$x_{4} = 2 \operatorname{atan}{\left(3 + \sqrt{10} \right)}$$
x4 = 2*atan(3 + sqrt(10))
Respuesta numérica
[src]
x1 = 4.71238898038469
x2 = 43.6605465958605
x3 = 78.2180657853482
x4 = -3.46334320798644
x5 = 15.3862127135523
x6 = 7.85398163397448
x7 = 49.9437319030401
x8 = -38.0208623974742
x9 = -39.2699081698724
x10 = 5.96143475278294
x11 = -1864.53523990554
x12 = -75.7199742405517
x13 = 95.8185759344887
x14 = -86.3937979737193
x15 = -60.0120109726027
x16 = 40.5189539422707
x17 = -45.553093477052
x18 = 26.7035375555132
x19 = -94.5695301620904
x20 = 6417.95204072955
x21 = -64.4026493985908
x22 = 48.6946861306418
x23 = -58.1194640914112
x24 = -66.2951962797823
x25 = 34.2357686350911
x26 = 39.2699081698724
x27 = -53.7288256654231
x28 = 71.9348804781686
x29 = -80.1106126665397
x30 = -83.2522053201295
x31 = 65.651695170989
x32 = 86.3937979737193
x33 = 51.8362787842316
x34 = -72.5783815869619
x35 = -14.1371669411541
x36 = 12.2446200599625
x37 = 20.4203522483337
x38 = 62.5101025173992
x39 = -73.8274273593601
x40 = -0.321750554396642
x41 = -97.7111228156802
x42 = -28.5960844367048
x43 = 27.9525833279115
x44 = -29.845130209103
x45 = -6.60493586157623
x46 = -44.3040477046537
x47 = -89.5353906273091
x48 = -47.4456403582435
x49 = 64.4026493985908
x50 = 29.845130209103
x51 = -51.8362787842316
x52 = -22.3128991295252
x53 = 92.6769832808989
x54 = -9.74652851516602
x55 = -895.675656827488
x56 = -16.0297138223456
x57 = -67.5442420521806
x58 = -25.454491783115
x59 = -36.1283155162826
x60 = -7.85398163397448
x61 = 84.5012510925278
x62 = 14.1371669411541
x63 = -69.4367889333721
x64 = 100.209214360477
x65 = -31.7376770902946
x66 = 56.2269172102196
x67 = 80.1106126665397
x68 = 93.9260290532972
x69 = 42.4115008234622
x70 = -88.2863448549109
x71 = -50.5872330118333
x72 = 70.6858347057703
x73 = 36.1283155162826
x74 = 87.6428437461176
x75 = -1.5707963267949
x76 = -95.8185759344887
x77 = -23.5619449019235
x78 = 18.5278053671421
x79 = -17.2787595947439
x80 = -82.0031595477313
x81 = -91.4279375085006
x82 = 21.6693980207319
x83 = 73.8274273593601
x84 = 58.1194640914112
x85 = -61.261056745001
x86 = -42.4115008234622
x86 = -42.4115008234622