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$$- e^{x} \sin{\left(e^{x} \right)} \cos{\left(x \right)} - \sin{\left(x \right)} \cos{\left(e^{x} \right)} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = -97.3893722612836$$
$$x_{2} = -43.9822971502571$$
$$x_{3} = -72.2566310325652$$
$$x_{4} = -0.445443729760919$$
$$x_{5} = -59.6902604182061$$
$$x_{6} = -31.4159265358979$$
$$x_{7} = -15.707963267949$$
$$x_{8} = -78.5398163397448$$
$$x_{9} = -25.1327412287183$$
$$x_{10} = -3320.66343484441$$
$$x_{11} = -9.42477796728179$$
$$x_{12} = 1.56051829568925$$
$$x_{13} = -21.9911485751286$$
$$x_{14} = -94.2477796076938$$
$$x_{15} = -50.2654824574367$$
$$x_{16} = -75.398223686155$$
$$x_{17} = -28.2743338823081$$
$$x_{18} = -56.5486677646163$$
$$x_{19} = -65.9734457253857$$
$$x_{20} = -40.8407044966673$$
$$x_{21} = -91.106186954104$$
$$x_{22} = -69.1150383789755$$
$$x_{23} = -100.530964914873$$
$$x_{24} = -62.8318530717959$$
$$x_{25} = -87.9645943005142$$
$$x_{26} = -12.5663706143713$$
$$x_{27} = -3.14345430871294$$
$$x_{28} = -53.4070751110265$$
$$x_{29} = 7.85434944905737$$
$$x_{30} = -84.8230016469244$$
$$x_{31} = 4.14006883052804$$
$$x_{32} = -6.28318879450167$$
$$x_{33} = -232.477856365645$$
$$x_{34} = 2.25674887698714$$
$$x_{35} = -213.628300444106$$
$$x_{36} = -37.6991118430775$$
$$x_{37} = -18.8495559215388$$
$$x_{38} = -81.6814089933346$$
$$x_{39} = -113.097335529233$$
$$x_{40} = -47.1238898038469$$
$$x_{41} = 0.969482134706134$$
$$x_{42} = -34.5575191894877$$
Signos de extremos en los puntos:
(-97.3893722612836, -1)
(-43.982297150257104, 1)
(-72.25663103256524, -1)
(-0.4454437297609191, 0.723535793187419)
(-59.69026041820607, -1)
(-31.41592653589793, 1)
(-15.707963267948989, -0.999999999999989)
(-78.53981633974483, -1)
(-25.132741228718345, 1)
(-3320.6634348444113, -1)
(-9.424777967281791, -0.999999996743794)
(1.5605182956892512, 0.000502380239073103)
(-21.991148575128552, -1)
(-94.2477796076938, 1)
(-50.26548245743669, 1)
(-75.39822368615503, 1)
(-28.274333882308138, -1)
(-56.548667764616276, 1)
(-65.97344572538566, -1)
(-40.840704496667314, -1)
(-91.106186954104, -1)
(-69.11503837897546, 1)
(-100.53096491487338, 1)
(-62.83185307179586, 1)
(-87.96459430051421, 1)
(-12.566370614371335, 0.999999999993919)
(-3.1434543087129443, -0.999068161655725)
(-53.40707511102649, -1)
(7.8543494490573735, -0.000253027696226453)
(-84.82300164692441, -1)
(4.140068830528043, -0.541418615202319)
(-6.283188794501673, 0.999998256335409)
(-232.4778563656447, 1)
(2.2567488769871367, 0.628292581601804)
(-213.62830044410595, 1)
(-37.69911184307752, 1)
(-18.84955592153876, 1)
(-81.68140899333463, 1)
(-113.09733552923255, 1)
(-47.1238898038469, -1)
(0.9694821347061342, -0.495105694885608)
(-34.55751918948773, -1)
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:
$$x_{1} = -97.3893722612836$$
$$x_{2} = -72.2566310325652$$
$$x_{3} = -59.6902604182061$$
$$x_{4} = -15.707963267949$$
$$x_{5} = -78.5398163397448$$
$$x_{6} = -3320.66343484441$$
$$x_{7} = -9.42477796728179$$
$$x_{8} = -21.9911485751286$$
$$x_{9} = -28.2743338823081$$
$$x_{10} = -65.9734457253857$$
$$x_{11} = -40.8407044966673$$
$$x_{12} = -91.106186954104$$
$$x_{13} = -3.14345430871294$$
$$x_{14} = -53.4070751110265$$
$$x_{15} = 7.85434944905737$$
$$x_{16} = -84.8230016469244$$
$$x_{17} = 4.14006883052804$$
$$x_{18} = -47.1238898038469$$
$$x_{19} = 0.969482134706134$$
$$x_{20} = -34.5575191894877$$
Puntos máximos de la función:
$$x_{20} = -43.9822971502571$$
$$x_{20} = -0.445443729760919$$
$$x_{20} = -31.4159265358979$$
$$x_{20} = -25.1327412287183$$
$$x_{20} = 1.56051829568925$$
$$x_{20} = -94.2477796076938$$
$$x_{20} = -50.2654824574367$$
$$x_{20} = -75.398223686155$$
$$x_{20} = -56.5486677646163$$
$$x_{20} = -69.1150383789755$$
$$x_{20} = -100.530964914873$$
$$x_{20} = -62.8318530717959$$
$$x_{20} = -87.9645943005142$$
$$x_{20} = -12.5663706143713$$
$$x_{20} = -6.28318879450167$$
$$x_{20} = -232.477856365645$$
$$x_{20} = 2.25674887698714$$
$$x_{20} = -213.628300444106$$
$$x_{20} = -37.6991118430775$$
$$x_{20} = -18.8495559215388$$
$$x_{20} = -81.6814089933346$$
$$x_{20} = -113.097335529233$$
Decrece en los intervalos
$$\left[7.85434944905737, \infty\right)$$
Crece en los intervalos
$$\left(-\infty, -3320.66343484441\right]$$