Greatest Integer Function:
2.4 A Library of Parent
Functions
f(x) = x
this means the greatest integer less
than or equal to x
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f(x) = x
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Graph: f(x) = x
f(3) =
f(.5) =
f(67.445) =
f( 5/8) =
f(-5.4) =
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Piecewise functions:
tch f( x)=
√x+ 4, if x ≥0
­x+1, if x <0
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2