(A) find F(x) for the indicated values of x, if possible

(B) find the domain of f.

F(x)=x^3 for x= -3, 5


(A) f(-3)

i do not know how to work the problem

Respuesta :

Answer:

A) The indicated values of F(x) for x=-3 and x=5 are [tex]F(-3)=-27[/tex]  and [tex]F(5)=125[/tex]

B) The domain of f is the set of all real numbers

Step-by-step explanation:

Given that the function F is defined by

[tex]F(x)=x^3[/tex] for x=-3,5

A) To find F(x) for the indicated values of x :

Given [tex]F(x)=x^3[/tex] for x=-3,5

  • Put x=-3 in the given function

[tex]F(-3)=(-3)^3[/tex]

[tex]=(-3)\times (-3)\times (-3)[/tex]

[tex]=-27[/tex]

Therefore [tex]F(-3)=-27[/tex]

  • Put x=5 in the given function

[tex]F(5)=(5)^3[/tex]

[tex]=(5)\times (5)\times (5)[/tex]

[tex]=125[/tex]

Therefore [tex]F(5)=125[/tex]

The indicated values of F(x) for x=-3 and x=5 are [tex]F(-3)=-27[/tex]  and [tex]F(5)=125[/tex]

B) To find the domain of f :

The domain of the f in the given expression is the set of all real numbers except where the expression [tex]x^3[/tex] is undefined. In this case, there is no real number that makes the expression undefined.

The domain of f is the set of all real numbers

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