Sr Examen

cos(-t)≤-1 desigualdades

En la desigualdad la incógnita

Solución

Ha introducido [src]
cos(-t) <= -1
$$\cos{\left(- t \right)} \leq -1$$
cos(-t) <= -1
Solución detallada
Se da la desigualdad:
$$\cos{\left(- t \right)} \leq -1$$
Para resolver esta desigualdad primero hay que resolver la ecuación correspondiente:
$$\cos{\left(- t \right)} = -1$$
Resolvemos:
$$x_{1} = -53.4070745786761$$
$$x_{2} = -47.1238901083229$$
$$x_{3} = 9.42477748794163$$
$$x_{4} = -65.9734461969855$$
$$x_{5} = -59.6902606928653$$
$$x_{6} = 15.7079634518075$$
$$x_{7} = 47.123889410773$$
$$x_{8} = 28.2743343711514$$
$$x_{9} = 3.1415922548952$$
$$x_{10} = 40.8407045848602$$
$$x_{11} = -72.2566311847166$$
$$x_{12} = 59.6902600526626$$
$$x_{13} = 21.9911485852059$$
$$x_{14} = 78.5398152766482$$
$$x_{15} = -9.4247781365785$$
$$x_{16} = -28.2743337069329$$
$$x_{17} = -34.5575188899093$$
$$x_{18} = -15.707962774825$$
$$x_{19} = 59.6902606104322$$
$$x_{20} = 34.5575197055812$$
$$x_{21} = -91.1061864815274$$
$$x_{22} = -21.9911485864417$$
$$x_{23} = 78.5398166181283$$
$$x_{24} = 91.1061865667532$$
$$x_{25} = -9.42477744529557$$
$$x_{26} = -53.4070745963886$$
$$x_{27} = 3.14159306054457$$
$$x_{28} = -65.9734453607004$$
$$x_{29} = 78.5398149750205$$
$$x_{30} = 91.1061873718352$$
$$x_{31} = 65.9734460390947$$
$$x_{32} = 97.3893717959212$$
$$x_{33} = 28.2743338651796$$
$$x_{34} = -34.5575196658297$$
$$x_{35} = -97.3893717476911$$
$$x_{36} = -40.8407049008781$$
$$x_{37} = -28.2743340989896$$
$$x_{38} = -15.7079635641079$$
$$x_{39} = 59.6902599104079$$
$$x_{40} = 72.2566315166773$$
$$x_{41} = -28.2743343914215$$
$$x_{42} = -9.42477752082051$$
$$x_{43} = 34.5575190219169$$
$$x_{44} = 21.9911480932338$$
$$x_{45} = -3.14159217367683$$
$$x_{46} = -21.9911490521325$$
$$x_{47} = 72.2566306985$$
$$x_{48} = 72.2566310277176$$
$$x_{49} = -59.6902599212271$$
$$x_{50} = 15.7079627593774$$
$$x_{51} = -15.7079632965989$$
$$x_{52} = 65.9734452390837$$
$$x_{53} = 40.8407042062167$$
$$x_{54} = -1127.83176318906$$
$$x_{55} = -84.8230020565447$$
$$x_{56} = 53.4070766553897$$
$$x_{57} = -84.8230012511693$$
$$x_{58} = -65.9734449870253$$
$$x_{59} = 53.4070746418597$$
$$x_{60} = 84.8230013636028$$
$$x_{61} = 47.1238902162437$$
$$x_{62} = 97.389372581711$$
$$x_{63} = -40.8407040952604$$
$$x_{64} = -91.106187265474$$
$$x_{65} = 84.8230021335997$$
$$x_{66} = -47.1238893275319$$
$$x_{67} = 78.5398168562347$$
$$x_{68} = 9.42477826738203$$
$$x_{69} = -53.407075294995$$
$$x_{70} = 15.7079629803241$$
$$x_{71} = 78.5398161804942$$
$$x_{72} = -97.3893724533348$$
$$x_{73} = 15.707963957033$$
$$x_{74} = -72.2566308657983$$
$$x_{75} = 40.8407045792514$$
$$x_{76} = -97.3893716284562$$
$$x_{77} = -78.5398160472843$$
$$x_{78} = 28.2743335663982$$
$$x_{79} = 21.9911489072506$$
$$x_{80} = 40.8407049800347$$
$$x_{81} = -78.5398168194507$$
$$x_{82} = 65.9734457529812$$
$$x_{83} = -21.991148226056$$
$$x_{84} = -72.2566315419804$$
$$x_{85} = -40.8407049290801$$
$$x_{86} = 34.5575195449229$$
$$x_{87} = -3.14159295109225$$
$$x_{88} = 53.407075424589$$
$$x_{89} = -59.6902604578012$$
$$x_{90} = -65.9734457649277$$
$$x_{1} = -53.4070745786761$$
$$x_{2} = -47.1238901083229$$
$$x_{3} = 9.42477748794163$$
$$x_{4} = -65.9734461969855$$
$$x_{5} = -59.6902606928653$$
$$x_{6} = 15.7079634518075$$
$$x_{7} = 47.123889410773$$
$$x_{8} = 28.2743343711514$$
$$x_{9} = 3.1415922548952$$
$$x_{10} = 40.8407045848602$$
$$x_{11} = -72.2566311847166$$
$$x_{12} = 59.6902600526626$$
$$x_{13} = 21.9911485852059$$
$$x_{14} = 78.5398152766482$$
$$x_{15} = -9.4247781365785$$
$$x_{16} = -28.2743337069329$$
$$x_{17} = -34.5575188899093$$
$$x_{18} = -15.707962774825$$
$$x_{19} = 59.6902606104322$$
$$x_{20} = 34.5575197055812$$
$$x_{21} = -91.1061864815274$$
$$x_{22} = -21.9911485864417$$
$$x_{23} = 78.5398166181283$$
$$x_{24} = 91.1061865667532$$
$$x_{25} = -9.42477744529557$$
$$x_{26} = -53.4070745963886$$
$$x_{27} = 3.14159306054457$$
$$x_{28} = -65.9734453607004$$
$$x_{29} = 78.5398149750205$$
$$x_{30} = 91.1061873718352$$
$$x_{31} = 65.9734460390947$$
$$x_{32} = 97.3893717959212$$
$$x_{33} = 28.2743338651796$$
$$x_{34} = -34.5575196658297$$
$$x_{35} = -97.3893717476911$$
$$x_{36} = -40.8407049008781$$
$$x_{37} = -28.2743340989896$$
$$x_{38} = -15.7079635641079$$
$$x_{39} = 59.6902599104079$$
$$x_{40} = 72.2566315166773$$
$$x_{41} = -28.2743343914215$$
$$x_{42} = -9.42477752082051$$
$$x_{43} = 34.5575190219169$$
$$x_{44} = 21.9911480932338$$
$$x_{45} = -3.14159217367683$$
$$x_{46} = -21.9911490521325$$
$$x_{47} = 72.2566306985$$
$$x_{48} = 72.2566310277176$$
$$x_{49} = -59.6902599212271$$
$$x_{50} = 15.7079627593774$$
$$x_{51} = -15.7079632965989$$
$$x_{52} = 65.9734452390837$$
$$x_{53} = 40.8407042062167$$
$$x_{54} = -1127.83176318906$$
$$x_{55} = -84.8230020565447$$
$$x_{56} = 53.4070766553897$$
$$x_{57} = -84.8230012511693$$
$$x_{58} = -65.9734449870253$$
$$x_{59} = 53.4070746418597$$
$$x_{60} = 84.8230013636028$$
$$x_{61} = 47.1238902162437$$
$$x_{62} = 97.389372581711$$
$$x_{63} = -40.8407040952604$$
$$x_{64} = -91.106187265474$$
$$x_{65} = 84.8230021335997$$
$$x_{66} = -47.1238893275319$$
$$x_{67} = 78.5398168562347$$
$$x_{68} = 9.42477826738203$$
$$x_{69} = -53.407075294995$$
$$x_{70} = 15.7079629803241$$
$$x_{71} = 78.5398161804942$$
$$x_{72} = -97.3893724533348$$
$$x_{73} = 15.707963957033$$
$$x_{74} = -72.2566308657983$$
$$x_{75} = 40.8407045792514$$
$$x_{76} = -97.3893716284562$$
$$x_{77} = -78.5398160472843$$
$$x_{78} = 28.2743335663982$$
$$x_{79} = 21.9911489072506$$
$$x_{80} = 40.8407049800347$$
$$x_{81} = -78.5398168194507$$
$$x_{82} = 65.9734457529812$$
$$x_{83} = -21.991148226056$$
$$x_{84} = -72.2566315419804$$
$$x_{85} = -40.8407049290801$$
$$x_{86} = 34.5575195449229$$
$$x_{87} = -3.14159295109225$$
$$x_{88} = 53.407075424589$$
$$x_{89} = -59.6902604578012$$
$$x_{90} = -65.9734457649277$$
Las raíces dadas
$$x_{54} = -1127.83176318906$$
$$x_{72} = -97.3893724533348$$
$$x_{35} = -97.3893717476911$$
$$x_{76} = -97.3893716284562$$
$$x_{64} = -91.106187265474$$
$$x_{21} = -91.1061864815274$$
$$x_{55} = -84.8230020565447$$
$$x_{57} = -84.8230012511693$$
$$x_{81} = -78.5398168194507$$
$$x_{77} = -78.5398160472843$$
$$x_{84} = -72.2566315419804$$
$$x_{11} = -72.2566311847166$$
$$x_{74} = -72.2566308657983$$
$$x_{4} = -65.9734461969855$$
$$x_{90} = -65.9734457649277$$
$$x_{28} = -65.9734453607004$$
$$x_{58} = -65.9734449870253$$
$$x_{5} = -59.6902606928653$$
$$x_{89} = -59.6902604578012$$
$$x_{49} = -59.6902599212271$$
$$x_{69} = -53.407075294995$$
$$x_{26} = -53.4070745963886$$
$$x_{1} = -53.4070745786761$$
$$x_{2} = -47.1238901083229$$
$$x_{66} = -47.1238893275319$$
$$x_{85} = -40.8407049290801$$
$$x_{36} = -40.8407049008781$$
$$x_{63} = -40.8407040952604$$
$$x_{34} = -34.5575196658297$$
$$x_{17} = -34.5575188899093$$
$$x_{41} = -28.2743343914215$$
$$x_{37} = -28.2743340989896$$
$$x_{16} = -28.2743337069329$$
$$x_{46} = -21.9911490521325$$
$$x_{22} = -21.9911485864417$$
$$x_{83} = -21.991148226056$$
$$x_{38} = -15.7079635641079$$
$$x_{51} = -15.7079632965989$$
$$x_{18} = -15.707962774825$$
$$x_{15} = -9.4247781365785$$
$$x_{42} = -9.42477752082051$$
$$x_{25} = -9.42477744529557$$
$$x_{87} = -3.14159295109225$$
$$x_{45} = -3.14159217367683$$
$$x_{9} = 3.1415922548952$$
$$x_{27} = 3.14159306054457$$
$$x_{3} = 9.42477748794163$$
$$x_{68} = 9.42477826738203$$
$$x_{50} = 15.7079627593774$$
$$x_{70} = 15.7079629803241$$
$$x_{6} = 15.7079634518075$$
$$x_{73} = 15.707963957033$$
$$x_{44} = 21.9911480932338$$
$$x_{13} = 21.9911485852059$$
$$x_{79} = 21.9911489072506$$
$$x_{78} = 28.2743335663982$$
$$x_{33} = 28.2743338651796$$
$$x_{8} = 28.2743343711514$$
$$x_{43} = 34.5575190219169$$
$$x_{86} = 34.5575195449229$$
$$x_{20} = 34.5575197055812$$
$$x_{53} = 40.8407042062167$$
$$x_{75} = 40.8407045792514$$
$$x_{10} = 40.8407045848602$$
$$x_{80} = 40.8407049800347$$
$$x_{7} = 47.123889410773$$
$$x_{61} = 47.1238902162437$$
$$x_{59} = 53.4070746418597$$
$$x_{88} = 53.407075424589$$
$$x_{56} = 53.4070766553897$$
$$x_{39} = 59.6902599104079$$
$$x_{12} = 59.6902600526626$$
$$x_{19} = 59.6902606104322$$
$$x_{52} = 65.9734452390837$$
$$x_{82} = 65.9734457529812$$
$$x_{31} = 65.9734460390947$$
$$x_{47} = 72.2566306985$$
$$x_{48} = 72.2566310277176$$
$$x_{40} = 72.2566315166773$$
$$x_{29} = 78.5398149750205$$
$$x_{14} = 78.5398152766482$$
$$x_{71} = 78.5398161804942$$
$$x_{23} = 78.5398166181283$$
$$x_{67} = 78.5398168562347$$
$$x_{60} = 84.8230013636028$$
$$x_{65} = 84.8230021335997$$
$$x_{24} = 91.1061865667532$$
$$x_{30} = 91.1061873718352$$
$$x_{32} = 97.3893717959212$$
$$x_{62} = 97.389372581711$$
son puntos de cambio del signo de desigualdad en las soluciones.
Primero definámonos con el signo hasta el punto extremo izquierdo:
$$x_{0} \leq x_{54}$$
Consideremos, por ejemplo, el punto
$$x_{0} = x_{54} - \frac{1}{10}$$
=
$$-1127.83176318906 + - \frac{1}{10}$$
=
$$-1127.93176318906$$
lo sustituimos en la expresión
$$\cos{\left(- t \right)} \leq -1$$
$$\cos{\left(- t \right)} \leq -1$$
cos(t) <= -1

Entonces
$$x \leq -1127.83176318906$$
no se cumple
significa que una de las soluciones de nuestra ecuación será con:
$$x \geq -1127.83176318906 \wedge x \leq -97.3893724533348$$
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       x54      x72      x35      x76      x64      x21      x55      x57      x81      x77      x84      x11      x74      x4      x90      x28      x58      x5      x89      x49      x69      x26      x1      x2      x66      x85      x36      x63      x34      x17      x41      x37      x16      x46      x22      x83      x38      x51      x18      x15      x42      x25      x87      x45      x9      x27      x3      x68      x50      x70      x6      x73      x44      x13      x79      x78      x33      x8      x43      x86      x20      x53      x75      x10      x80      x7      x61      x59      x88      x56      x39      x12      x19      x52      x82      x31      x47      x48      x40      x29      x14      x71      x23      x67      x60      x65      x24      x30      x32      x62

Recibiremos otras soluciones de la desigualdad pasando al polo siguiente etc.
etc.
Respuesta:
$$x \geq -1127.83176318906 \wedge x \leq -97.3893724533348$$
$$x \geq -97.3893717476911 \wedge x \leq -97.3893716284562$$
$$x \geq -91.106187265474 \wedge x \leq -91.1061864815274$$
$$x \geq -84.8230020565447 \wedge x \leq -84.8230012511693$$
$$x \geq -78.5398168194507 \wedge x \leq -78.5398160472843$$
$$x \geq -72.2566315419804 \wedge x \leq -72.2566311847166$$
$$x \geq -72.2566308657983 \wedge x \leq -65.9734461969855$$
$$x \geq -65.9734457649277 \wedge x \leq -65.9734453607004$$
$$x \geq -65.9734449870253 \wedge x \leq -59.6902606928653$$
$$x \geq -59.6902604578012 \wedge x \leq -59.6902599212271$$
$$x \geq -53.407075294995 \wedge x \leq -53.4070745963886$$
$$x \geq -53.4070745786761 \wedge x \leq -47.1238901083229$$
$$x \geq -47.1238893275319 \wedge x \leq -40.8407049290801$$
$$x \geq -40.8407049008781 \wedge x \leq -40.8407040952604$$
$$x \geq -34.5575196658297 \wedge x \leq -34.5575188899093$$
$$x \geq -28.2743343914215 \wedge x \leq -28.2743340989896$$
$$x \geq -28.2743337069329 \wedge x \leq -21.9911490521325$$
$$x \geq -21.9911485864417 \wedge x \leq -21.991148226056$$
$$x \geq -15.7079635641079 \wedge x \leq -15.7079632965989$$
$$x \geq -15.707962774825 \wedge x \leq -9.4247781365785$$
$$x \geq -9.42477752082051 \wedge x \leq -9.42477744529557$$
$$x \geq -3.14159295109225 \wedge x \leq -3.14159217367683$$
$$x \geq 3.1415922548952 \wedge x \leq 3.14159306054457$$
$$x \geq 9.42477748794163 \wedge x \leq 9.42477826738203$$
$$x \geq 15.7079627593774 \wedge x \leq 15.7079629803241$$
$$x \geq 15.7079634518075 \wedge x \leq 15.707963957033$$
$$x \geq 21.9911480932338 \wedge x \leq 21.9911485852059$$
$$x \geq 21.9911489072506 \wedge x \leq 28.2743335663982$$
$$x \geq 28.2743338651796 \wedge x \leq 28.2743343711514$$
$$x \geq 34.5575190219169 \wedge x \leq 34.5575195449229$$
$$x \geq 34.5575197055812 \wedge x \leq 40.8407042062167$$
$$x \geq 40.8407045792514 \wedge x \leq 40.8407045848602$$
$$x \geq 40.8407049800347 \wedge x \leq 47.123889410773$$
$$x \geq 47.1238902162437 \wedge x \leq 53.4070746418597$$
$$x \geq 53.407075424589 \wedge x \leq 53.4070766553897$$
$$x \geq 59.6902599104079 \wedge x \leq 59.6902600526626$$
$$x \geq 59.6902606104322 \wedge x \leq 65.9734452390837$$
$$x \geq 65.9734457529812 \wedge x \leq 65.9734460390947$$
$$x \geq 72.2566306985 \wedge x \leq 72.2566310277176$$
$$x \geq 72.2566315166773 \wedge x \leq 78.5398149750205$$
$$x \geq 78.5398152766482 \wedge x \leq 78.5398161804942$$
$$x \geq 78.5398166181283 \wedge x \leq 78.5398168562347$$
$$x \geq 84.8230013636028 \wedge x \leq 84.8230021335997$$
$$x \geq 91.1061865667532 \wedge x \leq 91.1061873718352$$
$$x \geq 97.3893717959212 \wedge x \leq 97.389372581711$$
Respuesta rápida [src]
t = pi
$$t = \pi$$
t = pi
Respuesta rápida 2 [src]
{pi}
$$x\ in\ \left\{\pi\right\}$$
x in FiniteSet(pi)