Para hallar los extremos hay que resolver la ecuación
dxdf(x)=0(la derivada es igual a cero),
y las raíces de esta ecuación serán los extremos de esta función:
dxdf(x)=primera derivadax2cos(x)−tan2(x)−1−x32(sin(x)−tan(x))=0Resolvermos esta ecuaciónRaíces de esta ecuación
x1=−1156.10608070793x2=18.8495554664323x3=62.8318545472756x4=11447.9637185929x5=−87.9645943580839x6=56.5486904064043x7=81.6814092168155x8=6.28318571765258x9=125.663722285741x10=87.9645943361183x11=−43.9822971743842x12=−56.5486704437837x13=18.8495589320187x14=−62.8318521213994x15=446.106360287555x16=−62.8318540471604x17=94.2477796093519x18=−18.849556783468x19=−56.5486708391066x20=−69.1150272493433x21=−37.6991118773074x22=37.6991109715204x23=100.530964744173x24=−87.9646453390757x25=75.3982211826328x26=−31.4159193329553x27=81.6814033208689x28=62.8318566731154x29=−69.1150355143013x30=12.5663722955771x31=−113.097343315674x32=−797.964534586798x33=−31.4159153392304x34=12.566370255665x35=−18.8495548402421x36=69.1150315456483x37=69.1150321122122x38=−12.5663730816243x39=31.4159236906738x40=−75.398213104482x41=−75.3982240366897x42=62.8318518591974x43=−150.796496172887x44=12.5663699149855x45=−81.6814093267247x46=−383.274319745291x47=−31.4159267321981x48=94.2477798839718x49=25.1327402547553x50=6.28318528363928x51=43.982294196519x52=−56.5486673282356x53=−75.3982238973503x54=31.4159265700968x55=69.1150394396063x56=56.5486675815965x57=−119.380522005839x58=−31.4159249350464x59=43.9822874055792x60=−94.247800478884x61=−25.1327416418926x62=−43.9822967106817x63=37.6991120515325x64=−50.2654822633581x65=−12.5663701097364x66=31.415926978842x67=94.247788860923x68=−31.4159325737557x69=−56.5486676993217x70=69.1150375000423x71=12.5663704080972x72=−94.2477794270741x73=62.8318526612428x74=100.530963894357x75=43.9822971694917x76=75.3982241632366x77=81.6814063718606x78=−94.2477804566038x79=50.2654824463089x80=56.5486678154258x81=−25.1327379006296x82=25.1327409532572x83=87.9646020448506x84=−100.530964503023x85=−69.1150388279099x86=−81.6814090385276x87=−37.6991120138589x88=25.1327421838749x89=−6.2831850697993Signos de extremos en los puntos:
(-1156.106080707933, -1.4791990664389e-21)
(18.849555466432278, 1.32607504514291e-22)
(62.831854547275576, -4.06798065885684e-22)
(11447.963718592906, -2.68157684858385e-21)
(-87.96459435808394, 1.19729883771663e-26)
(56.5486904064043, -1.81491833854508e-18)
(81.6814092168155, -8.37117337725645e-25)
(6.2831857176525805, -8.75656364687435e-22)
(125.66372228574147, -1.33178707198341e-19)
(87.96459433611828, -2.56564036781697e-27)
(-43.98229717438416, 3.42085382277207e-27)
(-56.54867044378374, 3.00696164976335e-21)
(18.84955893201873, -3.8394775346208e-20)
(-62.83185212139935, -1.0872623196502e-22)
(446.1063602875554, -2.11662688328545e-17)
(-62.83185404716038, 1.17523019059098e-22)
(94.24777960935188, 0)
(-18.84955678346803, 9.01134915986591e-22)
(-56.54867083910665, 4.54395022019461e-21)
(-69.11502724934327, -1.44300449926285e-19)
(-37.699111877307445, 1.3968486432945e-26)
(37.69911097152045, 2.32957115598771e-22)
(100.53096474417282, 2.46194574663805e-25)
(-87.96464533907574, 8.59110372107709e-18)
(75.39822118263282, 1.38008655372991e-21)
(-31.415919332955337, -1.89321684187199e-19)
(81.68140332086892, 1.36785151426515e-20)
(62.831856673115375, -5.91552147446529e-21)
(-69.11503551430128, -2.46065553116755e-21)
(12.566372295577121, -1.50457321081269e-20)
(-113.0973433156742, 1.84536635182418e-20)
(-797.9645345867976, 1.49320513219997e-25)
(-31.41591533923042, -7.11109306159166e-19)
(12.566370255665037, 1.46166250644098e-22)
(-18.84955484024213, -1.77902663943669e-21)
(69.11503154564825, 3.33980343388759e-20)
(69.11503211221218, 2.57605497910039e-20)
(-12.566373081624262, 4.75563080864335e-20)
(31.415923690673846, 1.1668842119061e-20)
(-75.39821310448201, -1.04210153131107e-19)
(-75.39822403668971, 3.79011595711375e-24)
(62.8318518591974, 2.25820148195894e-22)
(-150.79649617288732, 2.55542052520409e-18)
(12.56636991498552, 1.08350767820219e-21)
(-81.68140932672466, 2.77716651578661e-24)
(-383.2743197452912, 1.39607239040796e-20)
(-31.41592673219809, 3.83518759406612e-24)
(94.24777988397176, -1.18601761660029e-24)
(25.132740254755262, 7.31166511843277e-22)
(6.283185283639279, 1.67621838755743e-25)
(43.98229419651897, 6.66086853101854e-21)
(-56.548667328235624, -1.29793108768428e-23)
(-75.39822389735026, 8.28796858550101e-25)
(31.41592657009683, -2.01146204561751e-26)
(69.11503943960635, -1.24876879800169e-22)
(56.54866758159649, 9.60204112386715e-25)
(-119.38052200583878, 5.61054888419897e-23)
(-31.415924935046437, -2.07840371883782e-21)
(43.982287405579214, 2.39175696670774e-19)
(-94.24780047888402, 5.11763207243069e-19)
(-25.132741641892622, 5.58180700521486e-23)
(-43.98229671068173, -2.19481985897024e-23)
(37.699112051532516, -3.18481487727445e-24)
(-50.26548226335814, -1.4457383595994e-24)
(-12.566370109736413, -4.06985854135691e-22)
(31.415926978842, -4.40376079061269e-23)
(94.24778886092298, -4.45971146345717e-20)
(-31.415932573755715, 1.11511551181653e-19)
(-56.54866769932167, -4.55269189322245e-26)
(69.11503750004229, 7.10605784716989e-23)
(12.566370408097232, 2.78252259383914e-23)
(-94.24777942707406, -3.3077376060062e-25)
(62.83185266124285, 8.76997465259479e-24)
(100.5309638943567, 5.25703998531663e-23)
(43.98229716949169, -1.71042691176656e-27)
(75.39822416323665, -9.55444461657348e-24)
(81.68140637186058, 1.3500521538547e-21)
(-94.24778045660378, 3.44362296755962e-23)
(50.265482446308916, 6.54772803023241e-28)
(56.54866781542581, -2.06940539751252e-26)
(-25.132737900629582, -2.91789467123813e-20)
(25.132740953257205, 1.65945622762347e-23)
(87.96460204485058, -3.0012869445813e-20)
(-100.53096450302264, -3.45720042675861e-24)
(-69.11503882790991, 9.47548226118709e-24)
(-81.68140903852758, 6.94291633846001e-27)
(-37.699112013858915, 1.75071695357976e-24)
(25.132742183874935, -6.89931430707941e-22)
(-6.283185069799302, -1.69633312367307e-22)
Intervalos de crecimiento y decrecimiento de la función:Hallemos los intervalos donde la función crece y decrece y también los puntos mínimos y máximos de la función, para lo cual miramos cómo se comporta la función en los extremos con desviación mínima del extremo:
La función no tiene puntos mínimos
La función no tiene puntos máximos
Decrece en todo el eje numérico