serwarsherwani serwarsherwani
  • 22-08-2019
  • Mathematics
contestada

Help please !!!
If f(x)=3x-1 and g(x) = x + 2 , find ( f +g ) (x)

Help please If fx3x1 and gx x 2 find f g x class=

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carlosego
carlosego carlosego
  • 22-08-2019

For this case we have the following functions:

[tex]f (x) = 3x-1\\g (x) = x + 2[/tex]

We must find [tex](f + g) (x)[/tex]. By definition we have to:

[tex](f + g) (x) = f (x) + g (x)[/tex]

So:

[tex](f + g) (x) = 3x-1 + (x + 2)\\(f + g) (x) = 3x-1 + x + 2[/tex]

We add similar terms:

[tex](f + g) (x) = 4x + 1[/tex]

Answer:

[tex](f + g) (x) = 4x + 1[/tex]

Option D

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