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sin^3(x)+cos^3(x)=-1 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
   3         3        
sin (x) + cos (x) = -1
$$\sin^{3}{\left(x \right)} + \cos^{3}{\left(x \right)} = -1$$
Gráfica
Suma y producto de raíces [src]
suma
           /    /        ___\\         /    /        ___\\       /    /        ___\\         /    /        ___\\
  pi       |    |1   I*\/ 2 ||         |    |1   I*\/ 2 ||       |    |1   I*\/ 2 ||         |    |1   I*\/ 2 ||
- -- + 2*re|atan|- - -------|| + 2*I*im|atan|- - -------|| + 2*re|atan|- + -------|| + 2*I*im|atan|- + -------||
  2        \    \3      3   //         \    \3      3   //       \    \3      3   //         \    \3      3   //
$$\left(- \frac{\pi}{2} + \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)}\right)\right) + \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)}\right)$$
=
    /    /        ___\\       /    /        ___\\              /    /        ___\\         /    /        ___\\
    |    |1   I*\/ 2 ||       |    |1   I*\/ 2 ||   pi         |    |1   I*\/ 2 ||         |    |1   I*\/ 2 ||
2*re|atan|- - -------|| + 2*re|atan|- + -------|| - -- + 2*I*im|atan|- - -------|| + 2*I*im|atan|- + -------||
    \    \3      3   //       \    \3      3   //   2          \    \3      3   //         \    \3      3   //
$$- \frac{\pi}{2} + 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)} + 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)}$$
producto
     /    /    /        ___\\         /    /        ___\\\ /    /    /        ___\\         /    /        ___\\\
-pi  |    |    |1   I*\/ 2 ||         |    |1   I*\/ 2 ||| |    |    |1   I*\/ 2 ||         |    |1   I*\/ 2 |||
----*|2*re|atan|- - -------|| + 2*I*im|atan|- - -------|||*|2*re|atan|- + -------|| + 2*I*im|atan|- + -------|||
 2   \    \    \3      3   //         \    \3      3   /// \    \    \3      3   //         \    \3      3   ///
$$- \frac{\pi}{2} \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)}\right) \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)}\right)$$
=
      /    /    /        ___\\     /    /        ___\\\ /    /    /        ___\\     /    /        ___\\\
      |    |    |1   I*\/ 2 ||     |    |1   I*\/ 2 ||| |    |    |1   I*\/ 2 ||     |    |1   I*\/ 2 |||
-2*pi*|I*im|atan|- - -------|| + re|atan|- - -------|||*|I*im|atan|- + -------|| + re|atan|- + -------|||
      \    \    \3      3   //     \    \3      3   /// \    \    \3      3   //     \    \3      3   ///
$$- 2 \pi \left(\operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)}\right) \left(\operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)}\right)$$
-2*pi*(i*im(atan(1/3 - i*sqrt(2)/3)) + re(atan(1/3 - i*sqrt(2)/3)))*(i*im(atan(1/3 + i*sqrt(2)/3)) + re(atan(1/3 + i*sqrt(2)/3)))
Respuesta rápida [src]
     -pi 
x1 = ----
      2  
$$x_{1} = - \frac{\pi}{2}$$
         /    /        ___\\         /    /        ___\\
         |    |1   I*\/ 2 ||         |    |1   I*\/ 2 ||
x2 = 2*re|atan|- - -------|| + 2*I*im|atan|- - -------||
         \    \3      3   //         \    \3      3   //
$$x_{2} = 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} - \frac{\sqrt{2} i}{3} \right)}\right)}$$
         /    /        ___\\         /    /        ___\\
         |    |1   I*\/ 2 ||         |    |1   I*\/ 2 ||
x3 = 2*re|atan|- + -------|| + 2*I*im|atan|- + -------||
         \    \3      3   //         \    \3      3   //
$$x_{3} = 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{3} + \frac{\sqrt{2} i}{3} \right)}\right)}$$
x3 = 2*re(atan(1/3 + sqrt(2)*i/3)) + 2*i*im(atan(1/3 + sqrt(2)*i/3))
Respuesta numérica [src]
x1 = -51.8362786760391
x2 = -21.9911485866776
x3 = -40.8407047275785
x4 = 91.1061866782628
x5 = 97.3893724443308
x6 = -58.1194642367418
x7 = -83.2522049575361
x8 = 3.1415933598342
x9 = -45.5530935630466
x10 = -76.9690198676666
x11 = 4.71238906709808
x12 = -58.1194639889175
x13 = 15.7079633669648
x14 = 42.4115007464308
x15 = -3.14159296122677
x16 = -14.1371668265996
x17 = 72.2566310276876
x18 = -32.986723251117
x19 = -7.85398147228712
x20 = 48.6946861550632
x21 = -1.57079640863107
x22 = 29.8451303353433
x23 = -9.42477815879719
x24 = 86.3937978131303
x25 = -70.6858343783636
x26 = 78.5398161605795
x27 = -84.8230018570725
x28 = 54.9778714592847
x29 = 92.6769832653032
x30 = -97.3893724773473
x31 = 34.5575190007947
x32 = -28.2743337820612
x33 = 9.42477822352698
x34 = 84.823001347485
x35 = -91.1061872677113
x36 = 53.407074288215
x37 = 40.8407041928686
x38 = -20.4203519803221
x39 = 59.6902605705201
x40 = 3.14159240507716
x41 = 73.8274274969578
x42 = 86.3937979021257
x43 = 54.9778711224563
x44 = 61.2610570678623
x45 = -89.5353907167898
x46 = -53.4070753181826
x47 = -26.7035372287922
x48 = -32.9867227528477
x49 = 98.9601683691103
x50 = -1.57079632092246
x51 = -76.9690202418575
x52 = 67.5442423340112
x53 = 23.5619451770248
x54 = -39.2699079812463
x55 = 65.9734454574572
x56 = -28.2743345699081
x57 = -47.1238901147662
x58 = -95.8185758612313
x59 = -76.9690190961341
x60 = 65.9734457515484
x61 = -65.9734457677988
x62 = 28.2743338648136
x63 = 21.9911479507339
x64 = -15.7079632975992
x65 = -466.526508446661
x66 = 15.7079633904962
x67 = -183.783170653485
x68 = 17.2787599199721
x69 = 36.1283160412735
x70 = 47.1238895404761
x71 = -59.6902604596661
x72 = 80.1106130783293
x73 = 59.6902605148678
x74 = 21.9911485850171
x75 = 98.9601685558549
x76 = -84.8230015598068
x77 = -64.4026491380143
x78 = 42.4115009643665
x79 = -32.9867227127732
x80 = -40.8407048780523
x81 = 10.9955743563152
x82 = 10.9955740768918
x83 = -72.2566309320597
x83 = -72.2566309320597