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.Sam.
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f(x)=x+2
f(1)=1+2=?
treydwg
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So f(x) is x+2 correct?
treydwg
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.Sam. = 3
.Sam.
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yes
treydwg
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f(x) is 1?
treydwg
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or x+2
.Sam.
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You got it confused, the function is
f(x)=x+2
So, when x=1, you write the function as
f(1)=1+2, you then ignore the f(x), or you can simply say that what's 1+2. Then, you got 3,
Now you can rewrite it back as
f(1)=3
.Sam.
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The "x" in f(x) is simply "states" that what value of "x" you are substituting into.