Algebra..

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f(x)= x^2+3 ; g(x)=3x-1

Check These Please?

1.(fg)(-1)
= 5
2. (f o g)(1)
=10

How would you solve this?

1. (g o f)(x)

  • Algebra.. -

    (fg)(-1) = f(-1)*g(-1) = 4*(-4) = -16
    (fog)(1) = f(g(1)) = f(2) = 7
    (gof)(x) = g(f) = 3f-1 = 3(x^2+3)-1 = 3x^2+8

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