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(2*3^(2*x+1)-6^x-4^(x+1)-9)*1/((9^x)-3)<=3 desigualdades

En la desigualdad la incógnita

Solución

Ha introducido [src]
   2*x + 1    x    x + 1         
2*3        - 6  - 4      - 9     
---------------------------- <= 3
            x                    
           9  - 3                
$$\frac{\left(- 4^{x + 1} + \left(2 \cdot 3^{2 x + 1} - 6^{x}\right)\right) - 9}{9^{x} - 3} \leq 3$$
(-4^(x + 1) + 2*3^(2*x + 1) - 6^x - 9)/(9^x - 3) <= 3
Solución detallada
Se da la desigualdad:
$$\frac{\left(- 4^{x + 1} + \left(2 \cdot 3^{2 x + 1} - 6^{x}\right)\right) - 9}{9^{x} - 3} \leq 3$$
Para resolver esta desigualdad primero hay que resolver la ecuación correspondiente:
$$\frac{\left(- 4^{x + 1} + \left(2 \cdot 3^{2 x + 1} - 6^{x}\right)\right) - 9}{9^{x} - 3} = 3$$
Resolvemos:
$$x_{1} = -143.417884716279$$
$$x_{2} = -23.0088292911765$$
$$x_{3} = -46$$
$$x_{4} = -37.0161201630754$$
$$x_{5} = -3258489709168.54$$
$$x_{6} = -84$$
$$x_{7} = -25.0125858814494$$
$$x_{8} = -68$$
$$x_{9} = -90$$
$$x_{10} = -31.0158155027083$$
$$x_{11} = -98$$
$$x_{12} = -16993235.7210244$$
$$x_{13} = -4.81569548255271 \cdot 10^{15}$$
$$x_{14} = -44.5710701956579$$
$$x_{15} = -6.24818853962164 \cdot 10^{17}$$
$$x_{16} = -21.0031482604291$$
$$x_{17} = -11161915298.3515$$
$$x_{18} = -643652288132.243$$
$$x_{19} = -4960851182.46991$$
$$x_{20} = -29.0154049598892$$
$$x_{21} = -48$$
$$x_{22} = -7331601845787.07$$
$$x_{23} = -25789.6138194469$$
$$x_{24} = -58$$
$$x_{25} = -5.48537813533922 \cdot 10^{16}$$
$$x_{26} = -60$$
$$x_{27} = -38234900.6661399$$
$$x_{28} = -35.0160832913845$$
$$x_{29} = -92$$
$$x_{30} = -86$$
$$x_{31} = -1.23421007870129 \cdot 10^{17}$$
$$x_{32} = -37116234344798.6$$
$$x_{33} = -43.0704282853555$$
$$x_{34} = -100$$
$$x_{35} = -24.1893328005796$$
$$x_{36} = -27.0145033199437$$
$$x_{37} = -11418.8350591212$$
$$x_{38} = -187900936370906$$
$$x_{39} = -76$$
$$x_{40} = -127141192622.106$$
$$x_{41} = -1491778.32834008$$
$$x_{42} = -83511527276021.7$$
$$x_{43} = -294602.579016381$$
$$x_{44} = -78$$
$$x_{45} = -193564586.203078$$
$$x_{46} = -44.5815072958613$$
$$x_{47} = -2.43794583844066 \cdot 10^{16}$$
$$x_{48} = -56$$
$$x_{49} = -7552496.85674014$$
$$x_{50} = -16496104153180.4$$
$$x_{51} = -66$$
$$x_{52} = -82$$
$$x_{53} = -422777106834121$$
$$x_{54} = -88$$
$$x_{55} = -435520446.751108$$
$$x_{56} = -951248490381203$$
$$x_{57} = -41.019925261663$$
$$x_{58} = -86028649.2928612$$
$$x_{59} = -383.866735900145$$
$$x_{60} = -72$$
$$x_{61} = -39.0164395826827$$
$$x_{62} = -979921135.484193$$
$$x_{63} = -662963.57505738$$
$$x_{64} = -5033.24005178009$$
$$x_{65} = -74$$
$$x_{66} = -3.16314535877848 \cdot 10^{18}$$
$$x_{67} = -1.40584243276788 \cdot 10^{18}$$
$$x_{68} = -44.5818196229614$$
$$x_{69} = -1.08353148367553 \cdot 10^{16}$$
$$x_{70} = -44.573231296778$$
$$x_{71} = -286067683547.532$$
$$x_{72} = -2204822687.63364$$
$$x_{73} = -25114309561.5851$$
$$x_{74} = -2.77697267929279 \cdot 10^{17}$$
$$x_{75} = -62$$
$$x_{76} = -44.7272916666667$$
$$x_{77} = -45.0400882213706$$
$$x_{78} = -130887.704072476$$
$$x_{79} = -3356614.02864514$$
$$x_{80} = -54$$
$$x_{81} = -1448217648450.36$$
$$x_{82} = -64$$
$$x_{83} = -56507196656.3607$$
$$x_{84} = -58126.6759336368$$
$$x_{85} = -70$$
$$x_{86} = -96$$
$$x_{87} = -52$$
$$x_{88} = -80$$
$$x_{89} = -2.14030910340605 \cdot 10^{15}$$
$$x_{90} = -938.975140164849$$
$$x_{91} = -2196.98293223217$$
$$x_{92} = -44.5784608333706$$
$$x_{93} = -33.0159999023233$$
$$x_{94} = -94$$
$$x_{95} = -44.5732309457478$$
$$x_{96} = -50$$
$$x_{1} = -143.417884716279$$
$$x_{2} = -23.0088292911765$$
$$x_{3} = -46$$
$$x_{4} = -37.0161201630754$$
$$x_{5} = -3258489709168.54$$
$$x_{6} = -84$$
$$x_{7} = -25.0125858814494$$
$$x_{8} = -68$$
$$x_{9} = -90$$
$$x_{10} = -31.0158155027083$$
$$x_{11} = -98$$
$$x_{12} = -16993235.7210244$$
$$x_{13} = -4.81569548255271 \cdot 10^{15}$$
$$x_{14} = -44.5710701956579$$
$$x_{15} = -6.24818853962164 \cdot 10^{17}$$
$$x_{16} = -21.0031482604291$$
$$x_{17} = -11161915298.3515$$
$$x_{18} = -643652288132.243$$
$$x_{19} = -4960851182.46991$$
$$x_{20} = -29.0154049598892$$
$$x_{21} = -48$$
$$x_{22} = -7331601845787.07$$
$$x_{23} = -25789.6138194469$$
$$x_{24} = -58$$
$$x_{25} = -5.48537813533922 \cdot 10^{16}$$
$$x_{26} = -60$$
$$x_{27} = -38234900.6661399$$
$$x_{28} = -35.0160832913845$$
$$x_{29} = -92$$
$$x_{30} = -86$$
$$x_{31} = -1.23421007870129 \cdot 10^{17}$$
$$x_{32} = -37116234344798.6$$
$$x_{33} = -43.0704282853555$$
$$x_{34} = -100$$
$$x_{35} = -24.1893328005796$$
$$x_{36} = -27.0145033199437$$
$$x_{37} = -11418.8350591212$$
$$x_{38} = -187900936370906$$
$$x_{39} = -76$$
$$x_{40} = -127141192622.106$$
$$x_{41} = -1491778.32834008$$
$$x_{42} = -83511527276021.7$$
$$x_{43} = -294602.579016381$$
$$x_{44} = -78$$
$$x_{45} = -193564586.203078$$
$$x_{46} = -44.5815072958613$$
$$x_{47} = -2.43794583844066 \cdot 10^{16}$$
$$x_{48} = -56$$
$$x_{49} = -7552496.85674014$$
$$x_{50} = -16496104153180.4$$
$$x_{51} = -66$$
$$x_{52} = -82$$
$$x_{53} = -422777106834121$$
$$x_{54} = -88$$
$$x_{55} = -435520446.751108$$
$$x_{56} = -951248490381203$$
$$x_{57} = -41.019925261663$$
$$x_{58} = -86028649.2928612$$
$$x_{59} = -383.866735900145$$
$$x_{60} = -72$$
$$x_{61} = -39.0164395826827$$
$$x_{62} = -979921135.484193$$
$$x_{63} = -662963.57505738$$
$$x_{64} = -5033.24005178009$$
$$x_{65} = -74$$
$$x_{66} = -3.16314535877848 \cdot 10^{18}$$
$$x_{67} = -1.40584243276788 \cdot 10^{18}$$
$$x_{68} = -44.5818196229614$$
$$x_{69} = -1.08353148367553 \cdot 10^{16}$$
$$x_{70} = -44.573231296778$$
$$x_{71} = -286067683547.532$$
$$x_{72} = -2204822687.63364$$
$$x_{73} = -25114309561.5851$$
$$x_{74} = -2.77697267929279 \cdot 10^{17}$$
$$x_{75} = -62$$
$$x_{76} = -44.7272916666667$$
$$x_{77} = -45.0400882213706$$
$$x_{78} = -130887.704072476$$
$$x_{79} = -3356614.02864514$$
$$x_{80} = -54$$
$$x_{81} = -1448217648450.36$$
$$x_{82} = -64$$
$$x_{83} = -56507196656.3607$$
$$x_{84} = -58126.6759336368$$
$$x_{85} = -70$$
$$x_{86} = -96$$
$$x_{87} = -52$$
$$x_{88} = -80$$
$$x_{89} = -2.14030910340605 \cdot 10^{15}$$
$$x_{90} = -938.975140164849$$
$$x_{91} = -2196.98293223217$$
$$x_{92} = -44.5784608333706$$
$$x_{93} = -33.0159999023233$$
$$x_{94} = -94$$
$$x_{95} = -44.5732309457478$$
$$x_{96} = -50$$
Las raíces dadas
$$x_{66} = -3.16314535877848 \cdot 10^{18}$$
$$x_{67} = -1.40584243276788 \cdot 10^{18}$$
$$x_{15} = -6.24818853962164 \cdot 10^{17}$$
$$x_{74} = -2.77697267929279 \cdot 10^{17}$$
$$x_{31} = -1.23421007870129 \cdot 10^{17}$$
$$x_{25} = -5.48537813533922 \cdot 10^{16}$$
$$x_{47} = -2.43794583844066 \cdot 10^{16}$$
$$x_{69} = -1.08353148367553 \cdot 10^{16}$$
$$x_{13} = -4.81569548255271 \cdot 10^{15}$$
$$x_{89} = -2.14030910340605 \cdot 10^{15}$$
$$x_{56} = -951248490381203$$
$$x_{53} = -422777106834121$$
$$x_{38} = -187900936370906$$
$$x_{42} = -83511527276021.7$$
$$x_{32} = -37116234344798.6$$
$$x_{50} = -16496104153180.4$$
$$x_{22} = -7331601845787.07$$
$$x_{5} = -3258489709168.54$$
$$x_{81} = -1448217648450.36$$
$$x_{18} = -643652288132.243$$
$$x_{71} = -286067683547.532$$
$$x_{40} = -127141192622.106$$
$$x_{83} = -56507196656.3607$$
$$x_{73} = -25114309561.5851$$
$$x_{17} = -11161915298.3515$$
$$x_{19} = -4960851182.46991$$
$$x_{72} = -2204822687.63364$$
$$x_{62} = -979921135.484193$$
$$x_{55} = -435520446.751108$$
$$x_{45} = -193564586.203078$$
$$x_{58} = -86028649.2928612$$
$$x_{27} = -38234900.6661399$$
$$x_{12} = -16993235.7210244$$
$$x_{49} = -7552496.85674014$$
$$x_{79} = -3356614.02864514$$
$$x_{41} = -1491778.32834008$$
$$x_{63} = -662963.57505738$$
$$x_{43} = -294602.579016381$$
$$x_{78} = -130887.704072476$$
$$x_{84} = -58126.6759336368$$
$$x_{23} = -25789.6138194469$$
$$x_{37} = -11418.8350591212$$
$$x_{64} = -5033.24005178009$$
$$x_{91} = -2196.98293223217$$
$$x_{90} = -938.975140164849$$
$$x_{59} = -383.866735900145$$
$$x_{1} = -143.417884716279$$
$$x_{34} = -100$$
$$x_{11} = -98$$
$$x_{86} = -96$$
$$x_{94} = -94$$
$$x_{29} = -92$$
$$x_{9} = -90$$
$$x_{54} = -88$$
$$x_{30} = -86$$
$$x_{6} = -84$$
$$x_{52} = -82$$
$$x_{88} = -80$$
$$x_{44} = -78$$
$$x_{39} = -76$$
$$x_{65} = -74$$
$$x_{60} = -72$$
$$x_{85} = -70$$
$$x_{8} = -68$$
$$x_{51} = -66$$
$$x_{82} = -64$$
$$x_{75} = -62$$
$$x_{26} = -60$$
$$x_{24} = -58$$
$$x_{48} = -56$$
$$x_{80} = -54$$
$$x_{87} = -52$$
$$x_{96} = -50$$
$$x_{21} = -48$$
$$x_{3} = -46$$
$$x_{77} = -45.0400882213706$$
$$x_{76} = -44.7272916666667$$
$$x_{68} = -44.5818196229614$$
$$x_{46} = -44.5815072958613$$
$$x_{92} = -44.5784608333706$$
$$x_{70} = -44.573231296778$$
$$x_{95} = -44.5732309457478$$
$$x_{14} = -44.5710701956579$$
$$x_{33} = -43.0704282853555$$
$$x_{57} = -41.019925261663$$
$$x_{61} = -39.0164395826827$$
$$x_{4} = -37.0161201630754$$
$$x_{28} = -35.0160832913845$$
$$x_{93} = -33.0159999023233$$
$$x_{10} = -31.0158155027083$$
$$x_{20} = -29.0154049598892$$
$$x_{36} = -27.0145033199437$$
$$x_{7} = -25.0125858814494$$
$$x_{35} = -24.1893328005796$$
$$x_{2} = -23.0088292911765$$
$$x_{16} = -21.0031482604291$$
son puntos de cambio del signo de desigualdad en las soluciones.
Primero definámonos con el signo hasta el punto extremo izquierdo:
$$x_{0} \leq x_{66}$$
Consideremos, por ejemplo, el punto
$$x_{0} = x_{66} - \frac{1}{10}$$
=
$$-3.16314535877848 \cdot 10^{18} + - \frac{1}{10}$$
=
$$-3.16314535877848 \cdot 10^{18}$$
lo sustituimos en la expresión
$$\frac{\left(- 4^{x + 1} + \left(2 \cdot 3^{2 x + 1} - 6^{x}\right)\right) - 9}{9^{x} - 3} \leq 3$$
$$\frac{-9 + \left(\left(2 \cdot 3^{\left(-3.16314535877848 \cdot 10^{18}\right) 2 + 1} - 6^{-3.16314535877848 \cdot 10^{18}}\right) - 4^{-3.16314535877848 \cdot 10^{18} + 1}\right)}{-3 + 9^{-3.16314535877848 \cdot 10^{18}}} \leq 3$$
3 <= 3

pero
3 >= 3

significa que una de las soluciones de nuestra ecuación será con:
$$x \leq -3.16314535877848 \cdot 10^{18}$$
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       x66      x67      x15      x74      x31      x25      x47      x69      x13      x89      x56      x53      x38      x42      x32      x50      x22      x5      x81      x18      x71      x40      x83      x73      x17      x19      x72      x62      x55      x45      x58      x27      x12      x49      x79      x41      x63      x43      x78      x84      x23      x37      x64      x91      x90      x59      x1      x34      x11      x86      x94      x29      x9      x54      x30      x6      x52      x88      x44      x39      x65      x60      x85      x8      x51      x82      x75      x26      x24      x48      x80      x87      x96      x21      x3      x77      x76      x68      x46      x92      x70      x95      x14      x33      x57      x61      x4      x28      x93      x10      x20      x36      x7      x35      x2      x16

Recibiremos otras soluciones de la desigualdad pasando al polo siguiente etc.
etc.
Respuesta:
$$x \leq -3.16314535877848 \cdot 10^{18}$$
$$x \geq -1.40584243276788 \cdot 10^{18} \wedge x \leq -6.24818853962164 \cdot 10^{17}$$
$$x \geq -2.77697267929279 \cdot 10^{17} \wedge x \leq -1.23421007870129 \cdot 10^{17}$$
$$x \geq -5.48537813533922 \cdot 10^{16} \wedge x \leq -2.43794583844066 \cdot 10^{16}$$
$$x \geq -1.08353148367553 \cdot 10^{16} \wedge x \leq -4.81569548255271 \cdot 10^{15}$$
$$x \geq -2.14030910340605 \cdot 10^{15} \wedge x \leq -951248490381203$$
$$x \geq -422777106834121 \wedge x \leq -187900936370906$$
$$x \geq -83511527276021.7 \wedge x \leq -37116234344798.6$$
$$x \geq -16496104153180.4 \wedge x \leq -7331601845787.07$$
$$x \geq -3258489709168.54 \wedge x \leq -1448217648450.36$$
$$x \geq -643652288132.243 \wedge x \leq -286067683547.532$$
$$x \geq -127141192622.106 \wedge x \leq -56507196656.3607$$
$$x \geq -25114309561.5851 \wedge x \leq -11161915298.3515$$
$$x \geq -4960851182.46991 \wedge x \leq -2204822687.63364$$
$$x \geq -979921135.484193 \wedge x \leq -435520446.751108$$
$$x \geq -193564586.203078 \wedge x \leq -86028649.2928612$$
$$x \geq -38234900.6661399 \wedge x \leq -16993235.7210244$$
$$x \geq -7552496.85674014 \wedge x \leq -3356614.02864514$$
$$x \geq -1491778.32834008 \wedge x \leq -662963.57505738$$
$$x \geq -294602.579016381 \wedge x \leq -130887.704072476$$
$$x \geq -58126.6759336368 \wedge x \leq -25789.6138194469$$
$$x \geq -11418.8350591212 \wedge x \leq -5033.24005178009$$
$$x \geq -2196.98293223217 \wedge x \leq -938.975140164849$$
$$x \geq -383.866735900145 \wedge x \leq -143.417884716279$$
$$x \geq -100 \wedge x \leq -98$$
$$x \geq -96 \wedge x \leq -94$$
$$x \geq -92 \wedge x \leq -90$$
$$x \geq -88 \wedge x \leq -86$$
$$x \geq -84 \wedge x \leq -82$$
$$x \geq -80 \wedge x \leq -78$$
$$x \geq -76 \wedge x \leq -74$$
$$x \geq -72 \wedge x \leq -70$$
$$x \geq -68 \wedge x \leq -66$$
$$x \geq -64 \wedge x \leq -62$$
$$x \geq -60 \wedge x \leq -58$$
$$x \geq -56 \wedge x \leq -54$$
$$x \geq -52 \wedge x \leq -50$$
$$x \geq -48 \wedge x \leq -46$$
$$x \geq -45.0400882213706 \wedge x \leq -44.7272916666667$$
$$x \geq -44.5818196229614 \wedge x \leq -44.5815072958613$$
$$x \geq -44.5784608333706 \wedge x \leq -44.573231296778$$
$$x \geq -44.5732309457478 \wedge x \leq -44.5710701956579$$
$$x \geq -43.0704282853555 \wedge x \leq -41.019925261663$$
$$x \geq -39.0164395826827 \wedge x \leq -37.0161201630754$$
$$x \geq -35.0160832913845 \wedge x \leq -33.0159999023233$$
$$x \geq -31.0158155027083 \wedge x \leq -29.0154049598892$$
$$x \geq -27.0145033199437 \wedge x \leq -25.0125858814494$$
$$x \geq -24.1893328005796 \wedge x \leq -23.0088292911765$$
$$x \geq -21.0031482604291$$
Solución de la desigualdad en el gráfico