Asked by Luke
if f(x)=1-3x/2+x find an exact value of
f(-1/2)
f(-1/2)
Answers
Answered by
Reiny
As you typed it,
f(-1/2) = 1 -3(-1/2)/2 + (-1/2)
= 1 + 3/4 - 1/2
= 5/4
but you probably meant
f(x) = (1-3x)/(2+x)
f(-1/2) = (1 - 3(-1/2))/( 2 + (-1/2))
= (5/2)/(3/2)
= 5/3
f(-1/2) = 1 -3(-1/2)/2 + (-1/2)
= 1 + 3/4 - 1/2
= 5/4
but you probably meant
f(x) = (1-3x)/(2+x)
f(-1/2) = (1 - 3(-1/2))/( 2 + (-1/2))
= (5/2)/(3/2)
= 5/3
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