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3sin(3x)+2/tan(3x/2)=5 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
                2        
3*sin(3*x) + -------- = 5
                /3*x\    
             tan|---|    
                \ 2 /    
$$3 \sin{\left(3 x \right)} + \frac{2}{\tan{\left(\frac{3 x}{2} \right)}} = 5$$
Gráfica
Suma y producto de raíces [src]
suma
         /    /         ____\\         /    /         ____\\       /    /         ____\\         /    /         ____\\
         |    |3    I*\/ 31 ||         |    |3    I*\/ 31 ||       |    |3    I*\/ 31 ||         |    |3    I*\/ 31 ||
     2*re|atan|-- - --------||   2*I*im|atan|-- - --------||   2*re|atan|-- + --------||   2*I*im|atan|-- + --------||
pi       \    \10      10   //         \    \10      10   //       \    \10      10   //         \    \10      10   //
-- + ------------------------- + --------------------------- + ------------------------- + ---------------------------
6                3                            3                            3                            3             
$$\left(\frac{\pi}{6} + \left(\frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3}\right)\right) + \left(\frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3}\right)$$
=
         /    /         ____\\       /    /         ____\\         /    /         ____\\         /    /         ____\\
         |    |3    I*\/ 31 ||       |    |3    I*\/ 31 ||         |    |3    I*\/ 31 ||         |    |3    I*\/ 31 ||
     2*re|atan|-- - --------||   2*re|atan|-- + --------||   2*I*im|atan|-- - --------||   2*I*im|atan|-- + --------||
pi       \    \10      10   //       \    \10      10   //         \    \10      10   //         \    \10      10   //
-- + ------------------------- + ------------------------- + --------------------------- + ---------------------------
6                3                           3                            3                             3             
$$\frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{\pi}{6} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3}$$
producto
   /    /    /         ____\\         /    /         ____\\\ /    /    /         ____\\         /    /         ____\\\
   |    |    |3    I*\/ 31 ||         |    |3    I*\/ 31 ||| |    |    |3    I*\/ 31 ||         |    |3    I*\/ 31 |||
   |2*re|atan|-- - --------||   2*I*im|atan|-- - --------||| |2*re|atan|-- + --------||   2*I*im|atan|-- + --------|||
pi |    \    \10      10   //         \    \10      10   //| |    \    \10      10   //         \    \10      10   //|
--*|------------------------- + ---------------------------|*|------------------------- + ---------------------------|
6  \            3                            3             / \            3                            3             /
$$\frac{\pi}{6} \left(\frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3}\right) \left(\frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3}\right)$$
=
     /    /    /         ____\\     /    /         ____\\\ /    /    /         ____\\     /    /         ____\\\
     |    |    |3    I*\/ 31 ||     |    |3    I*\/ 31 ||| |    |    |3    I*\/ 31 ||     |    |3    I*\/ 31 |||
2*pi*|I*im|atan|-- - --------|| + re|atan|-- - --------|||*|I*im|atan|-- + --------|| + re|atan|-- + --------|||
     \    \    \10      10   //     \    \10      10   /// \    \    \10      10   //     \    \10      10   ///
----------------------------------------------------------------------------------------------------------------
                                                       27                                                       
$$\frac{2 \pi \left(\operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}\right) \left(\operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}\right)}{27}$$
2*pi*(i*im(atan(3/10 - i*sqrt(31)/10)) + re(atan(3/10 - i*sqrt(31)/10)))*(i*im(atan(3/10 + i*sqrt(31)/10)) + re(atan(3/10 + i*sqrt(31)/10)))/27
Respuesta rápida [src]
     pi
x1 = --
     6 
$$x_{1} = \frac{\pi}{6}$$
         /    /         ____\\         /    /         ____\\
         |    |3    I*\/ 31 ||         |    |3    I*\/ 31 ||
     2*re|atan|-- - --------||   2*I*im|atan|-- - --------||
         \    \10      10   //         \    \10      10   //
x2 = ------------------------- + ---------------------------
                 3                            3             
$$x_{2} = \frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} - \frac{\sqrt{31} i}{10} \right)}\right)}}{3}$$
         /    /         ____\\         /    /         ____\\
         |    |3    I*\/ 31 ||         |    |3    I*\/ 31 ||
     2*re|atan|-- + --------||   2*I*im|atan|-- + --------||
         \    \10      10   //         \    \10      10   //
x3 = ------------------------- + ---------------------------
                 3                            3             
$$x_{3} = \frac{2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3} + \frac{2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{3}{10} + \frac{\sqrt{31} i}{10} \right)}\right)}}{3}$$
x3 = 2*re(atan(3/10 + sqrt(31)*i/10))/3 + 2*i*im(atan(3/10 + sqrt(31)*i/10))/3
Respuesta numérica [src]
x1 = 82.2050077689329
x2 = 2.61799387799149
x3 = -70.6858347057703
x4 = 61.261056745001
x5 = -18.3259571459405
x6 = 44.5058959258554
x7 = 21.4675497995303
x8 = 42.4115008234622
x9 = 96.8657734856853
x10 = 98.9601685880785
x11 = -89.5353906273091
x12 = -49.7418836818384
x13 = 25.6563400043166
x14 = -51.8362787842316
x15 = -83.2522053201295
x16 = -14.1371669411541
x17 = -85.3466004225227
x18 = 92.6769832808989
x19 = 48.6946861306418
x20 = 67.5442420521806
x21 = -47.6474885794452
x22 = 71.733032256967
x23 = 23.5619449019235
x24 = -79.0634151153431
x25 = 38.2227106186758
x26 = -68.5914396033772
x27 = 6.80678408277789
x28 = 59.1666616426078
x29 = 88.4881930761125
x30 = 34.0339204138894
x31 = -62.3082542961976
x32 = -64.4026493985908
x33 = 17.2787595947439
x34 = -16.2315620435473
x35 = -93.7241808320955
x36 = 63.3554518473942
x37 = 75.9218224617533
x38 = -37.1755130674792
x39 = 69.6386371545737
x40 = -1.5707963267949
x41 = 90.5825881785057
x42 = 86.3937979737193
x43 = -60.2138591938044
x44 = -72.7802298081635
x45 = -43.4586983746588
x46 = -87.4409955249159
x47 = -91.6297857297023
x48 = 15.1843644923507
x49 = 36.1283155162826
x50 = 50.789081233035
x51 = -22.5147473507269
x52 = 27.7507351067098
x53 = -12.0427718387609
x54 = 80.1106126665397
x55 = 8.90117918517108
x56 = -56.025068989018
x57 = -74.8746249105567
x58 = 78.0162175641465
x59 = -24.60914245312
x60 = 94.7713783832921
x61 = 73.8274273593601
x62 = 46.6002910282486
x63 = -58.1194640914112
x64 = -9.94837673636768
x65 = -20.4203522483337
x66 = -41.3643032722656
x67 = 52.8834763354282
x68 = 54.9778714378214
x69 = -100.007366139275
x70 = -95.8185759344887
x71 = 29.845130209103
x72 = -81.1578102177363
x73 = 19.3731546971371
x74 = -30.8923277602996
x75 = 40.317105721069
x76 = -97.9129710368819
x77 = -35.081117965086
x78 = -53.9306738866248
x79 = -28.7979326579064
x80 = 31.9395253114962
x81 = -3.66519142918809
x82 = 84.2994028713261
x83 = 65.4498469497874
x84 = -26.7035375555132
x85 = -66.497044500984
x86 = 13.0899693899575
x87 = -45.553093477052
x88 = -7.85398163397448
x89 = -5.75958653158129
x89 = -5.75958653158129