Respuesta :

Edufirst

Answer:

  • 1/4

Explanation:

  • The double bar || || is used to symbolize the norm function.

It is defined as the inner product.

The inner product of x with x is expressed as ||x|| and it is:

  • [tex]||x||=\sqrt{<x,x>}=\sqrt{x.x}=\sqrt{x^2}=length-of-x[/tex]

Thus:

  • [tex]f(-1/4)=||-1/4||=\sqrt{(-1/4)^2}=1/4[/tex]