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$$- \frac{\left(\frac{10 e^{\frac{x}{2}} \sin{\left(2 x \right)}}{17} + \left(- \frac{e^{\frac{x}{2}} \cdot 40 \cos{\left(2 x \right)}}{17} - 1\right)\right) e^{\frac{\left(-1\right) x}{2}}}{2} + 5 e^{\frac{\left(-1\right) x}{2}} e^{\frac{x}{2}} \sin{\left(2 x \right)} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = 21.8686583243532$$
$$x_{2} = 72.1341417010018$$
$$x_{3} = 81.5589196617712$$
$$x_{4} = -1.57879569949206$$
$$x_{5} = 6.15832529660957$$
$$x_{6} = 40.7182151650297$$
$$x_{7} = 92.5544939493355$$
$$x_{8} = 87.8421049689508$$
$$x_{9} = 4.59507969182983$$
$$x_{10} = 37.5766225111572$$
$$x_{11} = 28.151844511022$$
$$x_{12} = 26.5810483110729$$
$$x_{13} = 43.8598078186783$$
$$x_{14} = 20.2978649328565$$
$$x_{15} = 70.5633453742069$$
$$x_{16} = 50.1429931258726$$
$$x_{17} = 100.40847558331$$
$$x_{18} = 86.2713086421559$$
$$x_{19} = 67.4217527206171$$
$$x_{20} = 73.7049380277967$$
$$x_{21} = 14.0147242621816$$
$$x_{22} = 18.7270621681194$$
$$x_{23} = 59.5677710866426$$
$$x_{24} = -3.60092572697893$$
$$x_{25} = 7.73257131940171$$
$$x_{26} = 57.9969747598478$$
$$x_{27} = 56.4261784330528$$
$$x_{28} = 78.4173270081814$$
$$x_{29} = 42.2890114919326$$
$$x_{30} = 62.7093637402324$$
$$x_{31} = 29.7226408956507$$
$$x_{32} = -0.178972890023548$$
$$x_{33} = 34.4350298562077$$
$$x_{34} = 51.7137894526685$$
$$x_{35} = 12.4437789529758$$
$$x_{36} = 84.700512315361$$
$$x_{37} = 65.8509563938222$$
$$x_{38} = 94.1252902761304$$
$$x_{39} = 36.0058261855018$$
$$x_{40} = 64.2801600670273$$
$$x_{41} = 79.9881233349763$$
$$x_{42} = 95.6960866029253$$
$$x_{43} = 48.5721967990798$$
$$x_{44} = -4.29438235525874$$
$$x_{45} = 15.5854526649682$$
Signos de extremos en los puntos:
(21.868658324353184, -2.42537408569055)
(72.13414170100181, -2.42535625036333)
(81.5589196617712, -2.42535625036333)
(-1.5787956994920558, 0.159980628969631)
(6.158325296609574, -2.4713267456605)
(40.7182151650297, -2.42535625180263)
(92.55449394933547, 2.42535625036333)
(87.84210496895078, -2.42535625036333)
(4.595079691829826, 2.32472029353113)
(37.57662251115725, -2.42535625728706)
(28.151844511021974, -2.42535702109753)
(26.58104831107288, 2.42535455992743)
(43.859807818678256, -2.42535625066253)
(20.297864932856466, 2.42531713252463)
(70.56334537420692, 2.42535625036333)
(50.14299312587259, -2.42535625037626)
(100.40847558330995, -2.42535625036333)
(86.27130864215589, 2.42535625036333)
(67.42175272061712, 2.42535625036333)
(73.70493802779671, 2.42535625036333)
(14.014724262181575, 2.42445104658303)
(18.727062168119353, -2.42544204687666)
(59.56777108664264, -2.42535625036345)
(-3.600925726978934, -7.9479283735532)
(7.732571319401707, 2.40441461421923)
(57.99697475984775, 2.42535625036307)
(56.42617843305282, -2.42535625036389)
(78.4173270081814, -2.42535625036333)
(42.2890114919326, 2.4253562497071)
(62.70936374023243, -2.42535625036335)
(29.722640895650713, 2.42535589895623)
(-0.1789728900235484, -3.50350953431561)
(34.43502985620772, -2.42535628366977)
(51.71378945266846, 2.42535625035743)
(12.44377895297577, -2.4273416897035)
(84.70051231536098, -2.42535625036333)
(65.85095639382223, -2.42535625036334)
(94.12529027613037, -2.42535625036333)
(36.00582618550184, 2.42535623517765)
(64.28016006702732, 2.42535625036332)
(79.9881233349763, 2.42535625036333)
(95.69608660292526, 2.42535625036333)
(48.572196799079826, 2.42535625033497)
(-4.294382355258739, -7.41976202031498)
(15.585452664968184, -2.42576897428859)
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:
$$x_{1} = 21.8686583243532$$
$$x_{2} = 72.1341417010018$$
$$x_{3} = 81.5589196617712$$
$$x_{4} = 6.15832529660957$$
$$x_{5} = 40.7182151650297$$
$$x_{6} = 87.8421049689508$$
$$x_{7} = 37.5766225111572$$
$$x_{8} = 28.151844511022$$
$$x_{9} = 43.8598078186783$$
$$x_{10} = 50.1429931258726$$
$$x_{11} = 100.40847558331$$
$$x_{12} = 18.7270621681194$$
$$x_{13} = 59.5677710866426$$
$$x_{14} = -3.60092572697893$$
$$x_{15} = 56.4261784330528$$
$$x_{16} = 78.4173270081814$$
$$x_{17} = 62.7093637402324$$
$$x_{18} = -0.178972890023548$$
$$x_{19} = 34.4350298562077$$
$$x_{20} = 12.4437789529758$$
$$x_{21} = 84.700512315361$$
$$x_{22} = 65.8509563938222$$
$$x_{23} = 94.1252902761304$$
$$x_{24} = 15.5854526649682$$
Puntos máximos de la función:
$$x_{24} = -1.57879569949206$$
$$x_{24} = 92.5544939493355$$
$$x_{24} = 4.59507969182983$$
$$x_{24} = 26.5810483110729$$
$$x_{24} = 20.2978649328565$$
$$x_{24} = 70.5633453742069$$
$$x_{24} = 86.2713086421559$$
$$x_{24} = 67.4217527206171$$
$$x_{24} = 73.7049380277967$$
$$x_{24} = 14.0147242621816$$
$$x_{24} = 7.73257131940171$$
$$x_{24} = 57.9969747598478$$
$$x_{24} = 42.2890114919326$$
$$x_{24} = 29.7226408956507$$
$$x_{24} = 51.7137894526685$$
$$x_{24} = 36.0058261855018$$
$$x_{24} = 64.2801600670273$$
$$x_{24} = 79.9881233349763$$
$$x_{24} = 95.6960866029253$$
$$x_{24} = 48.5721967990798$$
$$x_{24} = -4.29438235525874$$
Decrece en los intervalos
$$\left[100.40847558331, \infty\right)$$
Crece en los intervalos
$$\left(-\infty, -3.60092572697893\right]$$