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GoldRush18

  • 3 years ago

The function f on R is defined by F(X)={x-3 if x<=3 {x/4 if x>3 Find the value of i. f [f(20)] ii. f [f(8)] iii. f [f(3)]

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  1. experimentX
    • 3 years ago
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    okay ... i'll do the first example ... you do the rest 20 > 3 then F(x) = x/4 .... right?? f(20) = 20/4 = 5 again, 5>3, so F(x) = x/4 ... so f(5) = 5/4 = 1.25 :D

  2. experimentX
    • 3 years ago
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    try no 2, and alert me if you are stuck ..

  3. GoldRush18
    • 3 years ago
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    ok im gonna try it

  4. GoldRush18
    • 3 years ago
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    f(8)=x/4 =8/4 =2 so 2<3 so f(x)= 2-3= -1?

  5. experimentX
    • 3 years ago
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    yes ... you are right!!

  6. GoldRush18
    • 3 years ago
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    omg i got it :)

  7. GoldRush18
    • 3 years ago
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    thanks

  8. experimentX
    • 3 years ago
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    yw

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