Решебник по алгебре и начала математического анализа 11 класс Алимов Задание 921

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$$1)a=-6,b=6:$$

$$f(-6)=-6;$$

$$f(6)=1;$$

$$f^{{}^{\prime }}(-4)=0;$$

$$f^{{}^{\prime }}(-1)=0;$$

$$f^{{}^{\prime }}(4)=0;$$

$$f^{{}^{\prime }}(x)>0при-6<x<-4;$$

$$-1<x<4;$$

$$f^{{}^{\prime }}(x)<0при-4<x<-1;$$

$$4<x<6.$$

$$2)a=-4,b=5:$$

$$f(-4)=5;$$

$$f(5)=1;$$

$$f^{{}^{\prime }}(-3)=0;$$

$$f^{{}^{\prime }}(0)=0;$$

$$f^{{}^{\prime }}(3)=0;$$

$$f^{{}^{\prime }}(x)<0при-4<x<-3;$$

$$0<x<3;$$

$$f^{{}^{\prime }}(x)>0при-3<x<0;$$

$$3<x<5;$$