Para hallar los extremos hay que resolver la ecuación
$$\frac{d}{d x} f{\left(x \right)} = 0$$
(la derivada es igual a cero),
y las raíces de esta ecuación serán los extremos de esta función:
$$\frac{d}{d x} f{\left(x \right)} = $$
primera derivada$$\frac{e^{x}}{1 - e^{x \left(\frac{x}{2} + 1\right)}} + \frac{\left(\frac{x}{2} + \frac{x}{2} + 1\right) e^{x} e^{x \left(\frac{x}{2} + 1\right)}}{\left(1 - e^{x \left(\frac{x}{2} + 1\right)}\right)^{2}} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = 28.9620890166341$$
$$x_{2} = 76.5162106782208$$
$$x_{3} = -28.6943596043799$$
$$x_{4} = 10.4810551180426$$
$$x_{5} = 34.8392502079753$$
$$x_{6} = -92.2132213430942$$
$$x_{7} = -80.2451271074651$$
$$x_{8} = 42.7288452402976$$
$$x_{9} = -50.3914159606663$$
$$x_{10} = 46.6877762829739$$
$$x_{11} = -24.8076741592432$$
$$x_{12} = -58.3377124249816$$
$$x_{13} = 68.5473054354995$$
$$x_{14} = -20.9648808652053$$
$$x_{15} = 27.0151495573047$$
$$x_{16} = 54.623627287895$$
$$x_{17} = -56.3497113142373$$
$$x_{18} = 94.4654798903143$$
$$x_{19} = -64.3061861108853$$
$$x_{20} = 66.5562459808845$$
$$x_{21} = -22.8793491121891$$
$$x_{22} = 21.2345123835376$$
$$x_{23} = 56.6104161729572$$
$$x_{24} = 80.5029780991381$$
$$x_{25} = 30.9158612891769$$
$$x_{26} = -15.3593372555059$$
$$x_{27} = 98.4567232107033$$
$$x_{28} = -17.1969684851483$$
$$x_{29} = -68.2882415884721$$
$$x_{30} = -62.3160212977879$$
$$x_{31} = -98.2001902620909$$
$$x_{32} = -48.4076116917235$$
$$x_{33} = -40.4883834667848$$
$$x_{34} = 74.5233591950223$$
$$x_{35} = -10.2479603141928$$
$$x_{36} = -60.3265078154327$$
$$x_{37} = -72.2722807950237$$
$$x_{38} = -38.5138150497611$$
$$x_{39} = -52.3764545425553$$
$$x_{40} = -88.2228929179074$$
$$x_{41} = 19.3379596244699$$
$$x_{42} = -70.2800343339193$$
$$x_{43} = 82.4968425477036$$
$$x_{44} = 12.1040591364533$$
$$x_{45} = 48.6697660202548$$
$$x_{46} = -30.6488081209205$$
$$x_{47} = 100.45260622169$$
$$x_{48} = -84.2334824940775$$
$$x_{49} = -100.196193168581$$
$$x_{50} = 15.6247818795334$$
$$x_{51} = 44.7073945322353$$
$$x_{52} = 50.6531744084895$$
$$x_{53} = -54.362591820007$$
$$x_{54} = -86.228064985273$$
$$x_{55} = 90.4750104191475$$
$$x_{56} = -90.2179499984874$$
$$x_{57} = 92.4701421572582$$
$$x_{58} = -7.67929119483501$$
$$x_{59} = -66.2969435075443$$
$$x_{60} = -36.5420283825472$$
$$x_{61} = -8.82065355811331$$
$$x_{62} = 96.4610108264976$$
$$x_{63} = 52.6378406446428$$
$$x_{64} = -46.4252005910588$$
$$x_{65} = -78.2513955147154$$
$$x_{66} = 72.5309015703522$$
$$x_{67} = 64.5657397621909$$
$$x_{68} = 70.5388712182941$$
$$x_{69} = 7.83657777136693$$
$$x_{70} = 38.7783713446935$$
$$x_{71} = 9.02289694337115$$
$$x_{72} = 17.465102009593$$
$$x_{73} = -96.2043534607085$$
$$x_{74} = 62.5758396530863$$
$$x_{75} = 60.5866054706585$$
$$x_{76} = -82.2391633180928$$
$$x_{77} = 58.5981051512238$$
$$x_{78} = 23.1487959086869$$
$$x_{79} = -42.4653421912683$$
$$x_{80} = 13.8305646213614$$
$$x_{81} = -44.4443699549213$$
$$x_{82} = 40.7523965392307$$
$$x_{83} = 84.4909972102885$$
$$x_{84} = 86.4854219951314$$
$$x_{85} = -13.5703851876112$$
$$x_{86} = -94.2086933283192$$
$$x_{87} = 88.4800986212492$$
$$x_{88} = -26.7467597908737$$
$$x_{89} = -19.0686408223086$$
$$x_{90} = -11.8535751456397$$
$$x_{91} = -74.2649444149412$$
$$x_{92} = -76.2579924560991$$
$$x_{93} = -34.5735053916839$$
$$x_{94} = 32.8752332341382$$
$$x_{95} = 25.0766626196802$$
$$x_{96} = 78.5094259967043$$
$$x_{97} = 36.8071620516744$$
$$x_{98} = -32.6088462722306$$
Signos de extremos en los puntos:
(28.962089016634078, -7.18339357525018e-183)
(76.51621067822079, -4.58591665963571e-1272)
(-28.69435960437989, -1.61542017513743e-179)
(10.481055118042555, -1.39903685357398e-24)
(34.83925020797529, -2.70685386071027e-264)
(-92.21322134309419, -3.4403442008315e-1847)
(-80.24512710746508, -5.34591571744525e-1399)
(42.72884524029763, -3.48746159180166e-397)
(-50.39141596066627, -3.97319307435455e-552)
(46.68777628297386, -4.71668845417157e-474)
(-24.807674159243177, -2.30724429290365e-134)
(-58.337712424981596, -9.66608459956925e-740)
(68.54730543549952, -4.82031227394506e-1021)
(-20.964880865205323, -3.61486344845389e-96)
(27.01514955730468, -3.32635458218321e-159)
(54.623627287895, -1.22729335061312e-648)
(-56.349711314237275, -3.12280478315676e-690)
(94.46547989031433, -1.72713638589462e-1938)
(-64.30618611088535, -1.08180121625326e-898)
(66.55624598088446, -1.24597695657376e-962)
(-22.879349112189093, -2.14339860531265e-114)
(21.23451238353765, -1.22272384525652e-98)
(56.610416172957216, -1.25811565057557e-696)
(80.50297809913809, -5.33916631748338e-1408)
(30.915861289176938, -2.83618465308498e-208)
(-15.359337255505897, -5.92869648316431e-52)
(98.45672321070329, -1.08160717280511e-2105)
(-17.196968485148272, -6.05066694628077e-65)
(-68.28824158847213, -2.40302793130437e-1013)
(-62.31602129778792, -5.68916389122747e-844)
(-98.20019026209087, -9.74823328548945e-2095)
(-48.407611691723474, -1.44394288393648e-509)
(-40.48838346678479, -1.06790120243359e-356)
(74.52335919502231, -1.05346980859636e-1206)
(-10.247960314192774, -1.56691988894429e-23)
(-60.326507815432706, -5.47962109630034e-791)
(-72.2722807950237, -6.00621574722958e-1135)
(-38.51381504976113, -7.98855740547101e-323)
(-52.37645454255525, -2.00214719120937e-596)
(-88.22289291790742, -7.62913789957241e-1691)
(19.337959624469928, -6.25659687248068e-82)
(-70.28003433391933, -2.80721192749312e-1073)
(82.49684254770361, -1.42796774324689e-1478)
(12.10405913645333, -1.5351056199082e-32)
(48.66976602025484, -4.29847650499946e-515)
(-30.648808120920528, -1.05404943814839e-204)
(100.45260622168976, -6.70917154753187e-2192)
(-84.23348249407753, -1.90378072403853e-1541)
(-100.19619316858123, -9.96944666258344e-2181)
(15.624781879533398, -9.70547957044712e-54)
(44.70739453223533, -9.477802844408e-435)
(50.65317440848955, -7.17385424830614e-558)
(-54.362591820007005, -1.84768777834038e-642)
(-86.22806498527301, -2.81603434092297e-1615)
(90.47501041914748, -3.10352999273762e-1778)
(-90.21794999848743, -3.78555856260306e-1768)
(92.47014215725818, -1.71073379469627e-1857)
(-7.679291194835005, -1.56494328188115e-13)
(-66.2969435075443, -3.76747338848989e-955)
(-36.542028382547215, -1.09390932081874e-290)
(-8.820653558113312, -1.27377124532798e-17)
(96.46101082649756, -3.19366163385488e-2021)
(52.637840644642765, -2.19260890801327e-602)
(-46.425200591058825, -9.60980233587227e-469)
(-78.25139551471544, -2.22048065090668e-1330)
(72.5309015703522, -4.4323059900351e-1143)
(64.5657397621909, -5.89862181605473e-906)
(70.53887121829413, -3.41544964166264e-1081)
(7.836577771366933, -4.61917315628519e-14)
(38.77837134469346, -2.8987608007448e-327)
(9.022896943371146, -2.09634855623046e-18)
(17.46510200959298, -5.80260600504356e-67)
(-96.2043534607085, -1.74582028324905e-2010)
(62.575839653086256, -5.11439950431811e-851)
(60.586605470658476, -8.1215659018496e-798)
(-82.23916331809285, -2.357283692215e-1469)
(58.598105151223834, -2.3620165313186e-746)
(23.1487959086869, -4.3452351167717e-117)
(-42.46534219126834, -2.61355860509507e-392)
(13.830564621361363, -2.90465619215689e-42)
(-44.44436995492126, -1.17115981127433e-429)
(40.75239653923073, -2.34974479761186e-361)
(84.49099721028851, -6.99485192551082e-1551)
(86.48542199513139, -6.27558857446213e-1625)
(-13.57038518761119, -1.02606043620113e-40)
(-94.20869332831917, -5.72653123253002e-1928)
(88.48009862124916, -1.03120918209986e-1700)
(-26.74675979087374, -4.52082659317584e-156)
(-19.06864082230857, -1.10262195767039e-79)
(-11.853575145639718, -3.0848900488396e-31)
(-74.26494441494121, -2.35362555752285e-1198)
(-76.25799245609907, -1.68921805793231e-1263)
(-34.57350539168385, -2.74144908586576e-260)
(32.8752332341382, -2.04831346410153e-235)
(25.07666261968023, -2.81413144742491e-137)
(78.50942599670425, -3.65630967428454e-1339)
(36.80716205167437, -6.54704160419386e-295)
(-32.60884627223058, -1.25700119293549e-231)
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
Crece en todo el eje numérico