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 derivada−14xsin(7x)cos(7x)tan6(2)+cos2(7x)tan6(2)=0Resolvermos esta ecuaciónRaíces de esta ecuación
x1=−9.87461025876599x2=−19.7476705436182x3=96.2673748850015x4=−25.8059396544876x5=38.1481782787015x6=60.1392290429398x7=48.245887180129x8=33.211429583558x9=−89.5353906273091x10=−41.7385468736615x11=24.0107438524363x12=55.2024557613023x13=62.1586546460266x14=−79.8863409237441x15=−75.8471571714217x16=−53.856063530932x17=14.1371669411541x18=64.1784089188219x19=74.276226309873x20=−11.8931721885899x21=52.2850777347444x22=71.583432606796x23=−3.14483680523185x24=12.1184136852306x25=−9.20037848551297x26=40.1675060708981x27=36.1283155162826x28=42.1873432234011x29=−1.80085906346792x30=2.24853133657212x31=−39.7187071203852x32=−46.0018924275648x33=16.1573937568963x34=−27.8259016426157x35=−61.7098556955138x36=−29.845130209103x37=−33.8843207637185x38=0.0933244552992004x39=−31.8650457139301x40=−17.7275585452567x41=86.1695169171295x42=−93.7990894437344x43=−69.7882368047447x44=−82.1303321863628x45=−65.7490462501292x46=−0.224399475256414x47=−63.7296110879891x48=−87.7401948252578x49=−15.708612848622x50=20.1964580121188x51=66.1978452006421x52=−51.8362787842316x53=−47.7970882296161x54=−92.0038957643417x55=−71.8079741843521x56=−35.9042002436571x57=−85.7207185866077x58=98.2870739814527x59=58.1194640914112x60=88.1889937757706x61=0.470330003040298x62=−0.0933244552992004x63=94.2478878762175x64=90.2087021694325x65=−95.8185759344887x66=−99.8577664891041x67=18.1763574957695x68=−23.7867733572188x69=−97.8382755071733x70=6.28480884777756x71=−49.8168883385579x72=28.2746947724966x73=−57.89524086685x74=82.1303321863628x75=−55.875469338847x76=−7.85398163397448x77=72.256772252246x78=80.1106126665397x79=84.1498032211552x80=76.5202210624371x81=26.2547386050004x82=−5.83613470085334x83=4.26359002987186x84=−73.8274273593601x85=92.4526941764618x86=50.2656854602341x87=56.100050704779x88=−3.81479107935903x89=44.2066966255135x90=30.2939291596159x91=34.1090193993406x92=10.0979763865386x93=−77.8666179139756Signos de extremos en los puntos:
6
(-9.874610258765987, -9.87409360304636*tan (2))
6
(-19.74767054361817, -19.7474121853447*tan (2))
6
(96.26737488500152, 8.78839398920626e-25*tan (2))
6
(-25.805939654487588, -7.50489962228377e-28*tan (2))
6
(38.14817827870152, 38.1480445364585*tan (2))
6
(60.13922904293982, 60.1391442059091*tan (2))
6
(48.24588718012897, 2.34503295865519e-26*tan (2))
6
(33.21142958355798, 33.2112759612273*tan (2))
6
(-89.53539062730911, -3.91939002728315e-25*tan (2))
6
(-41.73854687366148, -41.7384246359159*tan (2))
6
(24.010743852436278, 1.66536603249196e-27*tan (2))
6
(55.20245576130234, 55.2023633372932*tan (2))
6
(62.158654646026626, 1.07871605619822e-25*tan (2))
6
(-79.88634092374414, -79.8862770575478*tan (2))
6
(-75.84715717142166, -75.8470899040845*tan (2))
6
(-53.856063530932, -53.8559687963468*tan (2))
6
(14.137166941154069, 3.06085974379874e-29*tan (2))
6
(64.17840891882194, 64.1783294211438*tan (2))
6
(74.27622630987297, 3.609449200233e-26*tan (2))
6
(-11.893172188589931, -2.56635054906443e-29*tan (2))
6
(52.28507773474442, 1.38447369493553e-25*tan (2))
6
(71.58343260679601, 1.30146993039844e-25*tan (2))
6
(-3.1448368052318516, -3.14321528702457*tan (2))
6
(12.118413685230559, 12.1179926842893*tan (2))
6
(-9.200378485512966, -5.65448569364571e-28*tan (2))
6
(40.16750607089807, 8.72602038708157e-29*tan (2))
6
(36.12831551628262, 8.33333793772587e-27*tan (2))
6
(42.187343223401115, 42.1872222860346*tan (2))
6
(-1.800859063467916, -1.79803039853426*tan (2))
6
(2.2485313365721242, 2.24626456923199*tan (2))
6
(-39.71870712038524, -7.89675566599354e-26*tan (2))
6
(-46.00189242756483, -4.66837920492084e-26*tan (2))
6
(16.15739375689631, 16.1570779917931*tan (2))
6
(-27.825901642615715, -27.825718288011*tan (2))
6
(-61.709855695513795, -1.19709102156758e-27*tan (2))
6
(-29.845130209103036, -1.2100893490981e-27*tan (2))
6
(-33.884320763718485, -3.59049041614397e-27*tan (2))
6
(0.09332445529920044, 0.0588498971202244*tan (2))
6
(-31.865045713930073, -31.8648856007068*tan (2))
6
(-17.72755854525669, -4.28624518877433e-30*tan (2))
6
(86.16951691712951, 86.1694577078233*tan (2))
6
(-93.79908944373445, -93.7990350504787*tan (2))
6
(-69.7882368047447, -5.83619849852646e-26*tan (2))
6
(-82.13033218636284, -82.1302700651365*tan (2))
6
(-65.74904625012924, -1.30705788845543e-25*tan (2))
6
(-0.2243994752564138, -8.41363270599985e-34*tan (2))
6
(-63.72961108798911, -63.7295310304724*tan (2))
6
(-87.7401948252578, -1.70013271407891e-27*tan (2))
6
(-15.708612848622005, -15.7082880627623*tan (2))
6
(20.196458012118764, 20.1962053947045*tan (2))
6
(66.19784520064208, 2.25152079060782e-25*tan (2))
6
(-51.83627878423159, -1.50889048851708e-27*tan (2))
6
(-47.79708822961614, -9.92883711869596e-26*tan (2))
6
(-92.00389576434168, -92.0038403097579*tan (2))
6
(-71.8079741843521, -71.8079031332491*tan (2))
6
(-35.904200243657144, -35.9040581427166*tan (2))
6
(-85.72071858660769, -85.7206590673064*tan (2))
6
(98.28707398145274, 98.2870220718993*tan (2))
6
(58.119464091411174, 3.63160384824741e-26*tan (2))
6
(88.18899377577063, 2.03283636195362e-26*tan (2))
6
(0.4703300030402981, 0.459726768858255*tan (2))
6
(-0.09332445529920044, -0.0588498971202244*tan (2))
6
(94.24788787621746, 94.2478337419764*tan (2))
6
(90.20870216943248, 90.2086456112791*tan (2))
6
(-95.81857593448869, -8.01441641500049e-26*tan (2))
6
(-99.85776648910414, -4.63163922232588e-25*tan (2))
6
(18.17635749576952, 2.79585219288648e-28*tan (2))
6
(-23.786773357218845, -23.7865588684887*tan (2))
6
(-97.83827550717332, -97.8382233595034*tan (2))
6
(6.284808847777558, 6.28399714737469*tan (2))
6
(-49.81688833855788, -49.8167859228812*tan (2))
6
(28.27469477249662, 28.2745143281701*tan (2))
6
(-57.895240866850024, -57.8951527415918*tan (2))
6
(82.13033218636284, 82.1302700651365*tan (2))
6
(-55.87546933884704, -2.71831594338562e-26*tan (2))
6
(-7.853981633974483, -1.20655944359504e-28*tan (2))
6
(72.25677225224598, 72.2567016424516*tan (2))
6
(80.11061266653972, 1.88481359874362e-25*tan (2))
6
(84.14980322115518, 5.63657643207218e-25*tan (2))
6
(76.5202210624371, 4.41367934949078e-25*tan (2))
6
(26.254738605000416, 7.62140381506604e-28*tan (2))
6
(-5.836134700853338, -5.83526061604565*tan (2))
6
(4.263590029871862, 3.68470334815878e-29*tan (2))
6
(-73.82742735936014, -9.36648117450064e-27*tan (2))
6
(92.45269417646178, 92.4526389910741*tan (2))
6
(50.265685460234145, 50.2655839589721*tan (2))
6
(56.10005070477896, 56.0999597595395*tan (2))
6
(-3.8147910793590345, -2.06312883147019e-30*tan (2))
6
(44.206696625513516, 6.62357259545183e-26*tan (2))
6
(30.293929159615864, 3.85015058508972e-27*tan (2))
6
(34.109019399340575, 34.108869819595*tan (2))
6
(10.09797638653862, 9.68026139285446e-30*tan (2))
6
(-77.86661791397559, -2.26868252765451e-27*tan (2))
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:
Puntos mínimos de la función:
x1=−9.87461025876599x2=−19.7476705436182x3=96.2673748850015x4=48.245887180129x5=−41.7385468736615x6=24.0107438524363x7=62.1586546460266x8=−79.8863409237441x9=−75.8471571714217x10=−53.856063530932x11=14.1371669411541x12=74.276226309873x13=52.2850777347444x14=71.583432606796x15=−3.14483680523185x16=40.1675060708981x17=36.1283155162826x18=−1.80085906346792x19=−27.8259016426157x20=−31.8650457139301x21=−93.7990894437344x22=−82.1303321863628x23=−63.7296110879891x24=−15.708612848622x25=66.1978452006421x26=−92.0038957643417x27=−71.8079741843521x28=−35.9042002436571x29=−85.7207185866077x30=58.1194640914112x31=88.1889937757706x32=−0.0933244552992004x33=18.1763574957695x34=−23.7867733572188x35=−97.8382755071733x36=−49.8168883385579x37=−57.89524086685x38=80.1106126665397x39=84.1498032211552x40=76.5202210624371x41=26.2547386050004x42=−5.83613470085334x43=4.26359002987186x44=44.2066966255135x45=30.2939291596159x46=10.0979763865386Puntos máximos de la función:
x46=−25.8059396544876x46=38.1481782787015x46=60.1392290429398x46=33.211429583558x46=−89.5353906273091x46=55.2024557613023x46=64.1784089188219x46=−11.8931721885899x46=12.1184136852306x46=−9.20037848551297x46=42.1873432234011x46=2.24853133657212x46=−39.7187071203852x46=−46.0018924275648x46=16.1573937568963x46=−61.7098556955138x46=−29.845130209103x46=−33.8843207637185x46=0.0933244552992004x46=−17.7275585452567x46=86.1695169171295x46=−69.7882368047447x46=−65.7490462501292x46=−0.224399475256414x46=−87.7401948252578x46=20.1964580121188x46=−51.8362787842316x46=−47.7970882296161x46=98.2870739814527x46=0.470330003040298x46=94.2478878762175x46=90.2087021694325x46=−95.8185759344887x46=−99.8577664891041x46=6.28480884777756x46=28.2746947724966x46=82.1303321863628x46=−55.875469338847x46=−7.85398163397448x46=72.256772252246x46=−73.8274273593601x46=92.4526941764618x46=50.2656854602341x46=56.100050704779x46=−3.81479107935903x46=34.1090193993406x46=−77.8666179139756Decrece en los intervalos
[96.2673748850015,∞)Crece en los intervalos
(−∞,−97.8382755071733]