Question:

How do you solve this homework problem?

by  |  earlier

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[f times g](x)

f(x)= x 1

g(x)= 3x-4

Steps please, thanks!

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  1. Did you want fg with a tiny dot meaning in f times g, or did you want f o g with a larger circle meaning f composed with g?  

    f times g =

    (fg)(x) =

    (x + 1)(3x - 4) =

    (x)(3x) + (x)(-4) + (1)(3x) + (1)(-4) =

    3x² - 4x + 3x - 4 =

    3x² - x - 4

    f composed with g =

    (fog)(x) =

    f(g(x)) =

    f(3x - 4) =

    (3x - 4) + 1 =

    3x - 4 + 1 =

    3x - 3

    Hope this helps you!

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