Se da la desigualdad:
$$\sin{\left(t \right)} \leq \frac{1}{2}$$
Para resolver esta desigualdad primero hay que resolver la ecuación correspondiente:
$$\sin{\left(t \right)} = \frac{1}{2}$$
Resolvemos:
Tenemos la ecuación
$$\sin{\left(t \right)} = \frac{1}{2}$$
cambiamos
$$\sin{\left(t \right)} - \frac{1}{2} = 0$$
$$\sin{\left(t \right)} - \frac{1}{2} = 0$$
Sustituimos
$$w = \sin{\left(t \right)}$$
Transportamos los términos libres (sin w)
del miembro izquierdo al derecho, obtenemos:
$$w = \frac{1}{2}$$
Obtenemos la respuesta: w = 1/2
hacemos cambio inverso
$$\sin{\left(t \right)} = w$$
sustituimos w:
$$x_{1} = -56.025068989018$$
$$x_{2} = -49.7418836818384$$
$$x_{3} = -4454.25478401473$$
$$x_{4} = -627.79493194236$$
$$x_{5} = 27.7507351067098$$
$$x_{6} = -60.2138591938044$$
$$x_{7} = -47.6474885794452$$
$$x_{8} = 101.054563690472$$
$$x_{9} = 84.2994028713261$$
$$x_{10} = -3.66519142918809$$
$$x_{11} = 46.6002910282486$$
$$x_{12} = 34.0339204138894$$
$$x_{13} = 90.5825881785057$$
$$x_{14} = 65.4498469497874$$
$$x_{15} = 71.733032256967$$
$$x_{16} = -41.3643032722656$$
$$x_{17} = -9.94837673636768$$
$$x_{18} = -97.9129710368819$$
$$x_{19} = 52.8834763354282$$
$$x_{20} = -72.7802298081635$$
$$x_{21} = -12.0427718387609$$
$$x_{22} = -24.60914245312$$
$$x_{23} = 6.80678408277789$$
$$x_{24} = 94.7713783832921$$
$$x_{25} = -37.1755130674792$$
$$x_{26} = 138.753675533549$$
$$x_{27} = -81.1578102177363$$
$$x_{28} = -5.75958653158129$$
$$x_{29} = 31.9395253114962$$
$$x_{30} = 69.6386371545737$$
$$x_{31} = 134.564885328763$$
$$x_{32} = 40.317105721069$$
$$x_{33} = 50.789081233035$$
$$x_{34} = 75.9218224617533$$
$$x_{35} = -53.9306738866248$$
$$x_{36} = -93.7241808320955$$
$$x_{37} = 78.0162175641465$$
$$x_{38} = 44.5058959258554$$
$$x_{39} = 96.8657734856853$$
$$x_{40} = -16.2315620435473$$
$$x_{41} = 17438.4572213013$$
$$x_{42} = 25.6563400043166$$
$$x_{43} = -62.3082542961976$$
$$x_{44} = 63.3554518473942$$
$$x_{45} = -85.3466004225227$$
$$x_{46} = -2650.98060085419$$
$$x_{47} = -35.081117965086$$
$$x_{48} = -30.8923277602996$$
$$x_{49} = 0.523598775598299$$
$$x_{50} = 82.2050077689329$$
$$x_{51} = -22.5147473507269$$
$$x_{52} = 8.90117918517108$$
$$x_{53} = -43.4586983746588$$
$$x_{54} = -87.4409955249159$$
$$x_{55} = -18.3259571459405$$
$$x_{56} = -28.7979326579064$$
$$x_{57} = -100.007366139275$$
$$x_{58} = 38.2227106186758$$
$$x_{59} = 13.0899693899575$$
$$x_{60} = -74.8746249105567$$
$$x_{61} = 15.1843644923507$$
$$x_{62} = 21.4675497995303$$
$$x_{63} = 59.1666616426078$$
$$x_{64} = -79.0634151153431$$
$$x_{65} = 2.61799387799149$$
$$x_{66} = -68.5914396033772$$
$$x_{67} = 88.4881930761125$$
$$x_{68} = 57.0722665402146$$
$$x_{69} = -66.497044500984$$
$$x_{70} = 19.3731546971371$$
$$x_{71} = -91.6297857297023$$
$$x_{1} = -56.025068989018$$
$$x_{2} = -49.7418836818384$$
$$x_{3} = -4454.25478401473$$
$$x_{4} = -627.79493194236$$
$$x_{5} = 27.7507351067098$$
$$x_{6} = -60.2138591938044$$
$$x_{7} = -47.6474885794452$$
$$x_{8} = 101.054563690472$$
$$x_{9} = 84.2994028713261$$
$$x_{10} = -3.66519142918809$$
$$x_{11} = 46.6002910282486$$
$$x_{12} = 34.0339204138894$$
$$x_{13} = 90.5825881785057$$
$$x_{14} = 65.4498469497874$$
$$x_{15} = 71.733032256967$$
$$x_{16} = -41.3643032722656$$
$$x_{17} = -9.94837673636768$$
$$x_{18} = -97.9129710368819$$
$$x_{19} = 52.8834763354282$$
$$x_{20} = -72.7802298081635$$
$$x_{21} = -12.0427718387609$$
$$x_{22} = -24.60914245312$$
$$x_{23} = 6.80678408277789$$
$$x_{24} = 94.7713783832921$$
$$x_{25} = -37.1755130674792$$
$$x_{26} = 138.753675533549$$
$$x_{27} = -81.1578102177363$$
$$x_{28} = -5.75958653158129$$
$$x_{29} = 31.9395253114962$$
$$x_{30} = 69.6386371545737$$
$$x_{31} = 134.564885328763$$
$$x_{32} = 40.317105721069$$
$$x_{33} = 50.789081233035$$
$$x_{34} = 75.9218224617533$$
$$x_{35} = -53.9306738866248$$
$$x_{36} = -93.7241808320955$$
$$x_{37} = 78.0162175641465$$
$$x_{38} = 44.5058959258554$$
$$x_{39} = 96.8657734856853$$
$$x_{40} = -16.2315620435473$$
$$x_{41} = 17438.4572213013$$
$$x_{42} = 25.6563400043166$$
$$x_{43} = -62.3082542961976$$
$$x_{44} = 63.3554518473942$$
$$x_{45} = -85.3466004225227$$
$$x_{46} = -2650.98060085419$$
$$x_{47} = -35.081117965086$$
$$x_{48} = -30.8923277602996$$
$$x_{49} = 0.523598775598299$$
$$x_{50} = 82.2050077689329$$
$$x_{51} = -22.5147473507269$$
$$x_{52} = 8.90117918517108$$
$$x_{53} = -43.4586983746588$$
$$x_{54} = -87.4409955249159$$
$$x_{55} = -18.3259571459405$$
$$x_{56} = -28.7979326579064$$
$$x_{57} = -100.007366139275$$
$$x_{58} = 38.2227106186758$$
$$x_{59} = 13.0899693899575$$
$$x_{60} = -74.8746249105567$$
$$x_{61} = 15.1843644923507$$
$$x_{62} = 21.4675497995303$$
$$x_{63} = 59.1666616426078$$
$$x_{64} = -79.0634151153431$$
$$x_{65} = 2.61799387799149$$
$$x_{66} = -68.5914396033772$$
$$x_{67} = 88.4881930761125$$
$$x_{68} = 57.0722665402146$$
$$x_{69} = -66.497044500984$$
$$x_{70} = 19.3731546971371$$
$$x_{71} = -91.6297857297023$$
Las raíces dadas
$$x_{3} = -4454.25478401473$$
$$x_{46} = -2650.98060085419$$
$$x_{4} = -627.79493194236$$
$$x_{57} = -100.007366139275$$
$$x_{18} = -97.9129710368819$$
$$x_{36} = -93.7241808320955$$
$$x_{71} = -91.6297857297023$$
$$x_{54} = -87.4409955249159$$
$$x_{45} = -85.3466004225227$$
$$x_{27} = -81.1578102177363$$
$$x_{64} = -79.0634151153431$$
$$x_{60} = -74.8746249105567$$
$$x_{20} = -72.7802298081635$$
$$x_{66} = -68.5914396033772$$
$$x_{69} = -66.497044500984$$
$$x_{43} = -62.3082542961976$$
$$x_{6} = -60.2138591938044$$
$$x_{1} = -56.025068989018$$
$$x_{35} = -53.9306738866248$$
$$x_{2} = -49.7418836818384$$
$$x_{7} = -47.6474885794452$$
$$x_{53} = -43.4586983746588$$
$$x_{16} = -41.3643032722656$$
$$x_{25} = -37.1755130674792$$
$$x_{47} = -35.081117965086$$
$$x_{48} = -30.8923277602996$$
$$x_{56} = -28.7979326579064$$
$$x_{22} = -24.60914245312$$
$$x_{51} = -22.5147473507269$$
$$x_{55} = -18.3259571459405$$
$$x_{40} = -16.2315620435473$$
$$x_{21} = -12.0427718387609$$
$$x_{17} = -9.94837673636768$$
$$x_{28} = -5.75958653158129$$
$$x_{10} = -3.66519142918809$$
$$x_{49} = 0.523598775598299$$
$$x_{65} = 2.61799387799149$$
$$x_{23} = 6.80678408277789$$
$$x_{52} = 8.90117918517108$$
$$x_{59} = 13.0899693899575$$
$$x_{61} = 15.1843644923507$$
$$x_{70} = 19.3731546971371$$
$$x_{62} = 21.4675497995303$$
$$x_{42} = 25.6563400043166$$
$$x_{5} = 27.7507351067098$$
$$x_{29} = 31.9395253114962$$
$$x_{12} = 34.0339204138894$$
$$x_{58} = 38.2227106186758$$
$$x_{32} = 40.317105721069$$
$$x_{38} = 44.5058959258554$$
$$x_{11} = 46.6002910282486$$
$$x_{33} = 50.789081233035$$
$$x_{19} = 52.8834763354282$$
$$x_{68} = 57.0722665402146$$
$$x_{63} = 59.1666616426078$$
$$x_{44} = 63.3554518473942$$
$$x_{14} = 65.4498469497874$$
$$x_{30} = 69.6386371545737$$
$$x_{15} = 71.733032256967$$
$$x_{34} = 75.9218224617533$$
$$x_{37} = 78.0162175641465$$
$$x_{50} = 82.2050077689329$$
$$x_{9} = 84.2994028713261$$
$$x_{67} = 88.4881930761125$$
$$x_{13} = 90.5825881785057$$
$$x_{24} = 94.7713783832921$$
$$x_{39} = 96.8657734856853$$
$$x_{8} = 101.054563690472$$
$$x_{31} = 134.564885328763$$
$$x_{26} = 138.753675533549$$
$$x_{41} = 17438.4572213013$$
son puntos de cambio del signo de desigualdad en las soluciones.
Primero definámonos con el signo hasta el punto extremo izquierdo:
$$x_{0} \leq x_{3}$$
Consideremos, por ejemplo, el punto
$$x_{0} = x_{3} - \frac{1}{10}$$
=
$$-4454.25478401473 + - \frac{1}{10}$$
=
$$-4454.35478401473$$
lo sustituimos en la expresión
$$\sin{\left(t \right)} \leq \frac{1}{2}$$
$$\sin{\left(t \right)} \leq \frac{1}{2}$$
sin(t) <= 1/2
Entonces
$$x \leq -4454.25478401473$$
no se cumple
significa que una de las soluciones de nuestra ecuación será con:
$$x \geq -4454.25478401473 \wedge x \leq -2650.98060085419$$
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x3 x46 x4 x57 x18 x36 x71 x54 x45 x27 x64 x60 x20 x66 x69 x43 x6 x1 x35 x2 x7 x53 x16 x25 x47 x48 x56 x22 x51 x55 x40 x21 x17 x28 x10 x49 x65 x23 x52 x59 x61 x70 x62 x42 x5 x29 x12 x58 x32 x38 x11 x33 x19 x68 x63 x44 x14 x30 x15 x34 x37 x50 x9 x67 x13 x24 x39 x8 x31 x26 x41
Recibiremos otras soluciones de la desigualdad pasando al polo siguiente etc.
etc.
Respuesta:
$$x \geq -4454.25478401473 \wedge x \leq -2650.98060085419$$
$$x \geq -627.79493194236 \wedge x \leq -100.007366139275$$
$$x \geq -97.9129710368819 \wedge x \leq -93.7241808320955$$
$$x \geq -91.6297857297023 \wedge x \leq -87.4409955249159$$
$$x \geq -85.3466004225227 \wedge x \leq -81.1578102177363$$
$$x \geq -79.0634151153431 \wedge x \leq -74.8746249105567$$
$$x \geq -72.7802298081635 \wedge x \leq -68.5914396033772$$
$$x \geq -66.497044500984 \wedge x \leq -62.3082542961976$$
$$x \geq -60.2138591938044 \wedge x \leq -56.025068989018$$
$$x \geq -53.9306738866248 \wedge x \leq -49.7418836818384$$
$$x \geq -47.6474885794452 \wedge x \leq -43.4586983746588$$
$$x \geq -41.3643032722656 \wedge x \leq -37.1755130674792$$
$$x \geq -35.081117965086 \wedge x \leq -30.8923277602996$$
$$x \geq -28.7979326579064 \wedge x \leq -24.60914245312$$
$$x \geq -22.5147473507269 \wedge x \leq -18.3259571459405$$
$$x \geq -16.2315620435473 \wedge x \leq -12.0427718387609$$
$$x \geq -9.94837673636768 \wedge x \leq -5.75958653158129$$
$$x \geq -3.66519142918809 \wedge x \leq 0.523598775598299$$
$$x \geq 2.61799387799149 \wedge x \leq 6.80678408277789$$
$$x \geq 8.90117918517108 \wedge x \leq 13.0899693899575$$
$$x \geq 15.1843644923507 \wedge x \leq 19.3731546971371$$
$$x \geq 21.4675497995303 \wedge x \leq 25.6563400043166$$
$$x \geq 27.7507351067098 \wedge x \leq 31.9395253114962$$
$$x \geq 34.0339204138894 \wedge x \leq 38.2227106186758$$
$$x \geq 40.317105721069 \wedge x \leq 44.5058959258554$$
$$x \geq 46.6002910282486 \wedge x \leq 50.789081233035$$
$$x \geq 52.8834763354282 \wedge x \leq 57.0722665402146$$
$$x \geq 59.1666616426078 \wedge x \leq 63.3554518473942$$
$$x \geq 65.4498469497874 \wedge x \leq 69.6386371545737$$
$$x \geq 71.733032256967 \wedge x \leq 75.9218224617533$$
$$x \geq 78.0162175641465 \wedge x \leq 82.2050077689329$$
$$x \geq 84.2994028713261 \wedge x \leq 88.4881930761125$$
$$x \geq 90.5825881785057 \wedge x \leq 94.7713783832921$$
$$x \geq 96.8657734856853 \wedge x \leq 101.054563690472$$
$$x \geq 134.564885328763 \wedge x \leq 138.753675533549$$
$$x \geq 17438.4572213013$$