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Composite functions

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  • f(x)=x/5, g(x)=5x. fg(x)=1
    1
  • f(x)=x+5, g(x)=x-5. fg(5)=?
    5
  • f(x)=5x, g(x)=4x. fg(-1)
    -20
  • f(x)=5x, g(x)=4x. fg(x)=20
    1
  • f(x)=5+x, fff(-10)=?
    5
  • f(x)=x/5, g(x)=5x. fg(x)=10
    10
  • f(x)=5+x, g(x)=x-5. fg(x)=5
    5
  • f(x)=x+5, g(x)=x-5. fgg(5)=?
    0
  • f(x)=x+5, g(x)=x-5. gf(-5)=?
    -5
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