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$$\left(- \cot^{2}{\left(x \right)} - 1\right) \operatorname{sign}{\left(\cot{\left(x \right)} \right)} + \cot^{2}{\left(x \right)} + 1 = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = -33.38561299476$$
$$x_{2} = 54$$
$$x_{3} = -100$$
$$x_{4} = 66$$
$$x_{5} = -96$$
$$x_{6} = -92.7703341398873$$
$$x_{7} = -65.75$$
$$x_{8} = -28$$
$$x_{9} = 10.7442050079644$$
$$x_{10} = -77.5408431813856$$
$$x_{11} = 60$$
$$x_{12} = 76.9061633594664$$
$$x_{13} = -42.7160706375309$$
$$x_{14} = -56$$
$$x_{15} = 98$$
$$x_{16} = -58.5444355187604$$
$$x_{17} = -72$$
$$x_{18} = -8$$
$$x_{19} = -90$$
$$x_{20} = 70.0756770314154$$
$$x_{21} = 48$$
$$x_{22} = 94.25$$
$$x_{23} = 64$$
$$x_{24} = 72.5007206006979$$
$$x_{25} = -14.9682117128838$$
$$x_{26} = 54.8557441540359$$
$$x_{27} = 82$$
$$x_{28} = -64.7330839489965$$
$$x_{29} = 50.4480595376821$$
$$x_{30} = -11.318049831998$$
$$x_{31} = -26.7067729887365$$
$$x_{32} = -2$$
$$x_{33} = -78$$
$$x_{34} = 58$$
$$x_{35} = -99.6313800125244$$
$$x_{36} = -34$$
$$x_{37} = -20.6995601091398$$
$$x_{38} = -83.75$$
$$x_{39} = 23.332047952558$$
$$x_{40} = -55.4594614389181$$
$$x_{41} = -52$$
$$x_{42} = -23.75$$
$$x_{43} = -62$$
$$x_{44} = -30$$
$$x_{45} = -48.7272430134738$$
$$x_{46} = 98.953605307344$$
$$x_{47} = 89.3762475917371$$
$$x_{48} = 70$$
$$x_{49} = -87.75$$
$$x_{50} = -93.75$$
$$x_{51} = 45.3471894767407$$
$$x_{52} = -17.3986217195782$$
$$x_{53} = -6$$
$$x_{54} = -70.7484138174238$$
$$x_{55} = -61.652487121769$$
$$x_{56} = 26$$
$$x_{57} = 94.5504223650703$$
$$x_{58} = 59.7277281186083$$
$$x_{59} = 38$$
$$x_{60} = 16.9999788791615$$
$$x_{61} = 28.3921582488827$$
$$x_{62} = 44$$
$$x_{63} = 67.3619164241845$$
$$x_{64} = -39.5148469139329$$
$$x_{65} = 32.8019279088066$$
$$x_{66} = -50$$
$$x_{67} = 25.5269252341341$$
$$x_{68} = 36$$
$$x_{69} = 42$$
$$x_{70} = 22$$
$$x_{71} = 4.70113063979927$$
$$x_{72} = 76$$
$$x_{73} = 81.8782751902011$$
$$x_{74} = -46$$
$$x_{75} = 16$$
$$x_{76} = 47.8512676053609$$
$$x_{77} = -8.52322650975524$$
$$x_{78} = 6.33269911147606$$
$$x_{79} = -40$$
$$x_{80} = 92.25$$
$$x_{81} = -18$$
$$x_{82} = 14$$
$$x_{83} = 86$$
$$x_{84} = -83.8196156882187$$
$$x_{85} = -43.75$$
$$x_{86} = -86.7506259137328$$
$$x_{87} = 10$$
$$x_{88} = -12$$
$$x_{89} = 88$$
$$x_{90} = 80$$
$$x_{91} = 35.91266153345$$
$$x_{92} = -21.75$$
$$x_{93} = 32$$
$$x_{94} = -80.7543623138673$$
$$x_{95} = 1.31647185509841$$
$$x_{96} = 20$$
$$x_{97} = -74$$
$$x_{98} = -36.8520619269931$$
Signos de extremos en los puntos:
(-33.38561299476004, 0)
(54, 0)
(-100, 0)
(66, 0)
(-96, 0)
(-92.7703341398873, 0)
(-65.75, 0)
(-28, 0)
(10.744205007964386, 0)
(-77.54084318138558, 0)
(60, 0)
(76.90616335946636, 0)
(-42.71607063753089, 0)
(-56, 0)
(98, 0)
(-58.54443551876036, 0)
(-72, 0)
(-8, 0)
(-90, 0)
(70.07567703141541, 0)
(48, 0)
(94.25, 0)
(64, 0)
(72.50072060069789, 0)
(-14.968211712883823, 0)
(54.85574415403593, 0)
(82, 0)
(-64.73308394899654, 0)
(50.4480595376821, 0)
(-11.31804983199799, 0)
(-26.706772988736542, 0)
(-2, 0)
(-78, 0)
(58, 0)
(-99.63138001252443, 0)
(-34, 0)
(-20.69956010913982, 0)
(-83.75, 0)
(23.332047952558007, 0)
(-55.45946143891815, 0)
(-52, 0)
(-23.75, 0)
(-62, 0)
(-30, 0)
(-48.72724301347383, 0)
(98.953605307344, 0)
(89.37624759173707, 0)
(70, 0)
(-87.75, 0)
(-93.75, 0)
(45.347189476740716, 0)
(-17.398621719578234, 0)
(-6, 0)
(-70.74841381742375, 0)
(-61.65248712176901, 0)
(26, 0)
(94.55042236507028, 0)
(59.727728118608255, 0)
(38, 0)
(16.999978879161517, 0)
(28.392158248882744, 0)
(44, 0)
(67.36191642418451, 0)
(-39.51484691393293, 0)
(32.80192790880663, 0)
(-50, 0)
(25.526925234134108, 0)
(36, 0)
(42, 0)
(22, 0)
(4.701130639799267, 0)
(76, 0)
(81.87827519020108, 0)
(-46, 0)
(16, 0)
(47.851267605360945, 0)
(-8.523226509755236, 0)
(6.332699111476061, 0)
(-40, 0)
(92.25, 0)
(-18, 0)
(14, 0)
(86, 0)
(-83.81961568821875, 0)
(-43.75, 0)
(-86.75062591373276, 0)
(10, 0)
(-12, 0)
(88, 0)
(80, 0)
(35.91266153345002, 0)
(-21.75, 0)
(32, 0)
(-80.75436231386733, 0)
(1.3164718550984087, 0)
(20, 0)
(-74, 0)
(-36.852061926993095, 0)
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
No cambia el valor en todo el eje numérico