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if f(x) = { 2+x , x>=0
2-x , x<0
Find f(f(x)) ?
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@helder_edwin @hartnn @sami-21 @experimentX
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f(x) = |x|+2
f(f(x)) = ||x|+2| + |x| + 2
helder_edwin
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i agree
\[ f(x)=|x|+2 \]
but
\[ \large f(f(x))=f(|x|+2)=||x|+2|+2 \]
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i did nt get u guys....
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f(f(x)) = fof (x)
helder_edwin
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yes. that's what i did.
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Can u expl these Stuffs
helder_edwin
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first
\[ \large f(x)=|x|+2 \]
do u agree?
helder_edwin
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well anyway.
the x in f(x) is the argument of the function. the letter itself has no meaning, but when u replace it with something u have to do the same in the RHS.
helder_edwin
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|dw:1352898658928:dw|
helder_edwin
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|dw:1352898684609:dw|
helder_edwin
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|dw:1352898707610:dw|
experimentX
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woops ... sorry!! should have paid attention!!