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4^x-sqrt(3)*cos(x)-2sin(x)*cos(x)>0 desigualdades

En la desigualdad la incógnita

Solución

Ha introducido [src]
 x     ___                             
4  - \/ 3 *cos(x) - 2*sin(x)*cos(x) > 0
$$\left(4^{x} - \sqrt{3} \cos{\left(x \right)}\right) - 2 \sin{\left(x \right)} \cos{\left(x \right)} > 0$$
4^x - sqrt(3)*cos(x) - 2*sin(x)*cos(x) > 0
Solución detallada
Se da la desigualdad:
$$\left(4^{x} - \sqrt{3} \cos{\left(x \right)}\right) - 2 \sin{\left(x \right)} \cos{\left(x \right)} > 0$$
Para resolver esta desigualdad primero hay que resolver la ecuación correspondiente:
$$\left(4^{x} - \sqrt{3} \cos{\left(x \right)}\right) - 2 \sin{\left(x \right)} \cos{\left(x \right)} = 0$$
Resolvemos:
$$x_{1} = -64.9262481741891$$
$$x_{2} = -82.7286065445312$$
$$x_{3} = -29.845130209103$$
$$x_{4} = -39.7935069454707$$
$$x_{5} = -67.5442420521806$$
$$x_{6} = -38.7463093942741$$
$$x_{7} = -36.1283155162826$$
$$x_{8} = -45.0294947014537$$
$$x_{9} = -92.6769832808989$$
$$x_{10} = -61.261056745001$$
$$x_{11} = -83.7758040957278$$
$$x_{12} = -95.8185759344887$$
$$x_{13} = -52.3598775598299$$
$$x_{14} = -89.0117918517108$$
$$x_{15} = -20.9439510239315$$
$$x_{16} = -76.4454212373516$$
$$x_{17} = -7.85405135077815$$
$$x_{18} = -58.6430628670095$$
$$x_{19} = -63.8790506229925$$
$$x_{20} = -48.6946861306418$$
$$x_{21} = -86.3937979737193$$
$$x_{22} = -17.2787595947545$$
$$x_{23} = -27.2271363311115$$
$$x_{24} = -80.1106126665397$$
$$x_{25} = -8.37756232720506$$
$$x_{26} = -14.6607657137713$$
$$x_{27} = -19.8967534727333$$
$$x_{28} = -0.659060267770608$$
$$x_{29} = -45.553093477052$$
$$x_{30} = -26.1799387799149$$
$$x_{31} = -32.4631240870945$$
$$x_{32} = -90.0589894029074$$
$$x_{33} = -58.1194640914112$$
$$x_{34} = -96.342174710087$$
$$x_{35} = -51.8362787842316$$
$$x_{36} = -42.4115008234622$$
$$x_{37} = -71.2094334813686$$
$$x_{38} = 0.618199421804696$$
$$x_{39} = -33.5103216382911$$
$$x_{40} = -77.4926187885482$$
$$x_{41} = -23.5619449019235$$
$$x_{42} = -70.162235930172$$
$$x_{43} = -73.8274273593601$$
$$x_{1} = -64.9262481741891$$
$$x_{2} = -82.7286065445312$$
$$x_{3} = -29.845130209103$$
$$x_{4} = -39.7935069454707$$
$$x_{5} = -67.5442420521806$$
$$x_{6} = -38.7463093942741$$
$$x_{7} = -36.1283155162826$$
$$x_{8} = -45.0294947014537$$
$$x_{9} = -92.6769832808989$$
$$x_{10} = -61.261056745001$$
$$x_{11} = -83.7758040957278$$
$$x_{12} = -95.8185759344887$$
$$x_{13} = -52.3598775598299$$
$$x_{14} = -89.0117918517108$$
$$x_{15} = -20.9439510239315$$
$$x_{16} = -76.4454212373516$$
$$x_{17} = -7.85405135077815$$
$$x_{18} = -58.6430628670095$$
$$x_{19} = -63.8790506229925$$
$$x_{20} = -48.6946861306418$$
$$x_{21} = -86.3937979737193$$
$$x_{22} = -17.2787595947545$$
$$x_{23} = -27.2271363311115$$
$$x_{24} = -80.1106126665397$$
$$x_{25} = -8.37756232720506$$
$$x_{26} = -14.6607657137713$$
$$x_{27} = -19.8967534727333$$
$$x_{28} = -0.659060267770608$$
$$x_{29} = -45.553093477052$$
$$x_{30} = -26.1799387799149$$
$$x_{31} = -32.4631240870945$$
$$x_{32} = -90.0589894029074$$
$$x_{33} = -58.1194640914112$$
$$x_{34} = -96.342174710087$$
$$x_{35} = -51.8362787842316$$
$$x_{36} = -42.4115008234622$$
$$x_{37} = -71.2094334813686$$
$$x_{38} = 0.618199421804696$$
$$x_{39} = -33.5103216382911$$
$$x_{40} = -77.4926187885482$$
$$x_{41} = -23.5619449019235$$
$$x_{42} = -70.162235930172$$
$$x_{43} = -73.8274273593601$$
Las raíces dadas
$$x_{34} = -96.342174710087$$
$$x_{12} = -95.8185759344887$$
$$x_{9} = -92.6769832808989$$
$$x_{32} = -90.0589894029074$$
$$x_{14} = -89.0117918517108$$
$$x_{21} = -86.3937979737193$$
$$x_{11} = -83.7758040957278$$
$$x_{2} = -82.7286065445312$$
$$x_{24} = -80.1106126665397$$
$$x_{40} = -77.4926187885482$$
$$x_{16} = -76.4454212373516$$
$$x_{43} = -73.8274273593601$$
$$x_{37} = -71.2094334813686$$
$$x_{42} = -70.162235930172$$
$$x_{5} = -67.5442420521806$$
$$x_{1} = -64.9262481741891$$
$$x_{19} = -63.8790506229925$$
$$x_{10} = -61.261056745001$$
$$x_{18} = -58.6430628670095$$
$$x_{33} = -58.1194640914112$$
$$x_{13} = -52.3598775598299$$
$$x_{35} = -51.8362787842316$$
$$x_{20} = -48.6946861306418$$
$$x_{29} = -45.553093477052$$
$$x_{8} = -45.0294947014537$$
$$x_{36} = -42.4115008234622$$
$$x_{4} = -39.7935069454707$$
$$x_{6} = -38.7463093942741$$
$$x_{7} = -36.1283155162826$$
$$x_{39} = -33.5103216382911$$
$$x_{31} = -32.4631240870945$$
$$x_{3} = -29.845130209103$$
$$x_{23} = -27.2271363311115$$
$$x_{30} = -26.1799387799149$$
$$x_{41} = -23.5619449019235$$
$$x_{15} = -20.9439510239315$$
$$x_{27} = -19.8967534727333$$
$$x_{22} = -17.2787595947545$$
$$x_{26} = -14.6607657137713$$
$$x_{25} = -8.37756232720506$$
$$x_{17} = -7.85405135077815$$
$$x_{28} = -0.659060267770608$$
$$x_{38} = 0.618199421804696$$
son puntos de cambio del signo de desigualdad en las soluciones.
Primero definámonos con el signo hasta el punto extremo izquierdo:
$$x_{0} < x_{34}$$
Consideremos, por ejemplo, el punto
$$x_{0} = x_{34} - \frac{1}{10}$$
=
$$-96.342174710087 + - \frac{1}{10}$$
=
$$-96.442174710087$$
lo sustituimos en la expresión
$$\left(4^{x} - \sqrt{3} \cos{\left(x \right)}\right) - 2 \sin{\left(x \right)} \cos{\left(x \right)} > 0$$
$$- 2 \sin{\left(-96.442174710087 \right)} \cos{\left(-96.442174710087 \right)} + \left(4^{-96.442174710087} - \sqrt{3} \cos{\left(-96.442174710087 \right)}\right) > 0$$
                                         ___    
-0.948097219208122 + 0.583960357601758*\/ 3  > 0
    

significa que una de las soluciones de nuestra ecuación será con:
$$x < -96.342174710087$$
 _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____           _____          
      \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \         /     \    
-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------ο-------
       x34      x12      x9      x32      x14      x21      x11      x2      x24      x40      x16      x43      x37      x42      x5      x1      x19      x10      x18      x33      x13      x35      x20      x29      x8      x36      x4      x6      x7      x39      x31      x3      x23      x30      x41      x15      x27      x22      x26      x25      x17      x28      x38

Recibiremos otras soluciones de la desigualdad pasando al polo siguiente etc.
etc.
Respuesta:
$$x < -96.342174710087$$
$$x > -95.8185759344887 \wedge x < -92.6769832808989$$
$$x > -90.0589894029074 \wedge x < -89.0117918517108$$
$$x > -86.3937979737193 \wedge x < -83.7758040957278$$
$$x > -82.7286065445312 \wedge x < -80.1106126665397$$
$$x > -77.4926187885482 \wedge x < -76.4454212373516$$
$$x > -73.8274273593601 \wedge x < -71.2094334813686$$
$$x > -70.162235930172 \wedge x < -67.5442420521806$$
$$x > -64.9262481741891 \wedge x < -63.8790506229925$$
$$x > -61.261056745001 \wedge x < -58.6430628670095$$
$$x > -58.1194640914112 \wedge x < -52.3598775598299$$
$$x > -51.8362787842316 \wedge x < -48.6946861306418$$
$$x > -45.553093477052 \wedge x < -45.0294947014537$$
$$x > -42.4115008234622 \wedge x < -39.7935069454707$$
$$x > -38.7463093942741 \wedge x < -36.1283155162826$$
$$x > -33.5103216382911 \wedge x < -32.4631240870945$$
$$x > -29.845130209103 \wedge x < -27.2271363311115$$
$$x > -26.1799387799149 \wedge x < -23.5619449019235$$
$$x > -20.9439510239315 \wedge x < -19.8967534727333$$
$$x > -17.2787595947545 \wedge x < -14.6607657137713$$
$$x > -8.37756232720506 \wedge x < -7.85405135077815$$
$$x > -0.659060267770608 \wedge x < 0.618199421804696$$
Solución de la desigualdad en el gráfico