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$$- \sin{\left(\left|{x + 3}\right| \right)} \operatorname{sign}{\left(x + 3 \right)} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = -56.4070751110265$$
$$x_{2} = 53.5486677646163$$
$$x_{3} = 94.3893722612836$$
$$x_{4} = -87.8230016469244$$
$$x_{5} = 40.9822971502571$$
$$x_{6} = 25.2743338823081$$
$$x_{7} = -62.6902604182061$$
$$x_{8} = -94.106186954104$$
$$x_{9} = 1225.36272755361$$
$$x_{10} = -106.672557568463$$
$$x_{11} = 56.6902604182061$$
$$x_{12} = -81.5398163397448$$
$$x_{13} = 62.9734457253857$$
$$x_{14} = -59.5486677646163$$
$$x_{15} = 50.4070751110265$$
$$x_{16} = -21.8495559215388$$
$$x_{17} = 44.1238898038469$$
$$x_{18} = 31.5575191894877$$
$$x_{19} = -75.2566310325652$$
$$x_{20} = 91.2477796076938$$
$$x_{21} = -28.1327412287183$$
$$x_{22} = -24.9911485751286$$
$$x_{23} = 66.1150383789755$$
$$x_{24} = 34.6991118430775$$
$$x_{25} = 75.5398163397448$$
$$x_{26} = 3.28318530717959$$
$$x_{27} = -46.9822971502571$$
$$x_{28} = -84.6814089933346$$
$$x_{29} = 47.2654824574367$$
$$x_{30} = 18.9911485751286$$
$$x_{31} = 9.56637061435917$$
$$x_{32} = -43.8407044966673$$
$$x_{33} = -40.6991118430775$$
$$x_{34} = -3$$
$$x_{35} = -97.2477796076938$$
$$x_{36} = -6.14159265358979$$
$$x_{37} = 72.398223686155$$
$$x_{38} = -31.2743338823081$$
$$x_{39} = 84.9645943005142$$
$$x_{40} = -12.4247779607694$$
$$x_{41} = -9.28318530717959$$
$$x_{42} = 28.4159265358979$$
$$x_{43} = -53.2654824574367$$
$$x_{44} = 69.2566310325652$$
$$x_{45} = 12.707963267949$$
$$x_{46} = -50.1238898038469$$
$$x_{47} = -37.5575191894877$$
$$x_{48} = 97.5309649148734$$
$$x_{49} = -68.9734457253857$$
$$x_{50} = -34.4159265358979$$
$$x_{51} = -555.920307031804$$
$$x_{52} = -65.8318530717959$$
$$x_{53} = 78.6814089933346$$
$$x_{54} = 15.8495559215388$$
$$x_{55} = 81.8230016469244$$
$$x_{56} = -15.5663706143592$$
$$x_{57} = 37.8407044966673$$
$$x_{58} = 0.141592653589793$$
$$x_{59} = -100.389372261284$$
$$x_{60} = -72.1150383789755$$
$$x_{61} = 100.672557568463$$
$$x_{62} = -18.707963267949$$
$$x_{63} = -78.398223686155$$
$$x_{64} = -90.9645943005142$$
$$x_{65} = 22.1327412287183$$
$$x_{66} = 59.8318530717959$$
$$x_{67} = 6.42477796076938$$
$$x_{68} = -119.238928182822$$
$$x_{69} = -103.530964914873$$
$$x_{70} = 88.106186954104$$
Signos de extremos en los puntos:
(-56.40707511102649, -1)
(53.548667764616276, 1)
(94.3893722612836, -1)
(-87.82300164692441, -1)
(40.982297150257104, 1)
(25.274333882308138, -1)
(-62.69026041820607, -1)
(-94.106186954104, -1)
(1225.3627275536091, -1)
(-106.67255756846318, -1)
(56.69026041820607, -1)
(-81.53981633974483, -1)
(62.97344572538566, -1)
(-59.548667764616276, 1)
(50.40707511102649, -1)
(-21.84955592153876, 1)
(44.1238898038469, -1)
(31.557519189487724, -1)
(-75.25663103256524, -1)
(91.2477796076938, 1)
(-28.132741228718345, 1)
(-24.991148575128552, -1)
(66.11503837897546, 1)
(34.69911184307752, 1)
(75.53981633974483, -1)
(3.2831853071795867, 1)
(-46.982297150257104, 1)
(-84.68140899333463, 1)
(47.26548245743669, 1)
(18.991148575128552, -1)
(9.566370614359172, 1)
(-43.840704496667314, -1)
(-40.69911184307752, 1)
(-3, 1)
(-97.2477796076938, 1)
(-6.141592653589793, -1)
(72.39822368615503, 1)
(-31.274333882308138, -1)
(84.96459430051421, 1)
(-12.42477796076938, -1)
(-9.283185307179586, 1)
(28.41592653589793, 1)
(-53.26548245743669, 1)
(69.25663103256524, -1)
(12.707963267948966, -1)
(-50.1238898038469, -1)
(-37.55751918948773, -1)
(97.53096491487338, 1)
(-68.97344572538566, -1)
(-34.41592653589793, 1)
(-555.9203070318036, 1)
(-65.83185307179586, 1)
(78.68140899333463, 1)
(15.849555921538759, 1)
(81.82300164692441, -1)
(-15.566370614359172, 1)
(37.840704496667314, -1)
(0.14159265358979323, -1)
(-100.3893722612836, -1)
(-72.11503837897546, 1)
(100.67255756846318, -1)
(-18.707963267948966, -1)
(-78.39822368615503, 1)
(-90.96459430051421, 1)
(22.132741228718345, 1)
(59.83185307179586, 1)
(6.424777960769379, -1)
(-119.23892818282235, -1)
(-103.53096491487338, 1)
(88.106186954104, -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:
$$x_{1} = -56.4070751110265$$
$$x_{2} = 94.3893722612836$$
$$x_{3} = -87.8230016469244$$
$$x_{4} = 25.2743338823081$$
$$x_{5} = -62.6902604182061$$
$$x_{6} = -94.106186954104$$
$$x_{7} = 1225.36272755361$$
$$x_{8} = -106.672557568463$$
$$x_{9} = 56.6902604182061$$
$$x_{10} = -81.5398163397448$$
$$x_{11} = 62.9734457253857$$
$$x_{12} = 50.4070751110265$$
$$x_{13} = 44.1238898038469$$
$$x_{14} = 31.5575191894877$$
$$x_{15} = -75.2566310325652$$
$$x_{16} = -24.9911485751286$$
$$x_{17} = 75.5398163397448$$
$$x_{18} = 18.9911485751286$$
$$x_{19} = -43.8407044966673$$
$$x_{20} = -6.14159265358979$$
$$x_{21} = -31.2743338823081$$
$$x_{22} = -12.4247779607694$$
$$x_{23} = 69.2566310325652$$
$$x_{24} = 12.707963267949$$
$$x_{25} = -50.1238898038469$$
$$x_{26} = -37.5575191894877$$
$$x_{27} = -68.9734457253857$$
$$x_{28} = 81.8230016469244$$
$$x_{29} = 37.8407044966673$$
$$x_{30} = 0.141592653589793$$
$$x_{31} = -100.389372261284$$
$$x_{32} = 100.672557568463$$
$$x_{33} = -18.707963267949$$
$$x_{34} = 6.42477796076938$$
$$x_{35} = -119.238928182822$$
$$x_{36} = 88.106186954104$$
Puntos máximos de la función:
$$x_{36} = 53.5486677646163$$
$$x_{36} = 40.9822971502571$$
$$x_{36} = -59.5486677646163$$
$$x_{36} = -21.8495559215388$$
$$x_{36} = 91.2477796076938$$
$$x_{36} = -28.1327412287183$$
$$x_{36} = 66.1150383789755$$
$$x_{36} = 34.6991118430775$$
$$x_{36} = 3.28318530717959$$
$$x_{36} = -46.9822971502571$$
$$x_{36} = -84.6814089933346$$
$$x_{36} = 47.2654824574367$$
$$x_{36} = 9.56637061435917$$
$$x_{36} = -40.6991118430775$$
$$x_{36} = -3$$
$$x_{36} = -97.2477796076938$$
$$x_{36} = 72.398223686155$$
$$x_{36} = 84.9645943005142$$
$$x_{36} = -9.28318530717959$$
$$x_{36} = 28.4159265358979$$
$$x_{36} = -53.2654824574367$$
$$x_{36} = 97.5309649148734$$
$$x_{36} = -34.4159265358979$$
$$x_{36} = -555.920307031804$$
$$x_{36} = -65.8318530717959$$
$$x_{36} = 78.6814089933346$$
$$x_{36} = 15.8495559215388$$
$$x_{36} = -15.5663706143592$$
$$x_{36} = -72.1150383789755$$
$$x_{36} = -78.398223686155$$
$$x_{36} = -90.9645943005142$$
$$x_{36} = 22.1327412287183$$
$$x_{36} = 59.8318530717959$$
$$x_{36} = -103.530964914873$$
Decrece en los intervalos
$$\left[1225.36272755361, \infty\right)$$
Crece en los intervalos
$$\left(-\infty, -119.238928182822\right]$$