Function Rules and Output
ISEE Middle Level Quantitative Reasoning · Flashcards
ISEE MIDDLE LEVEL QUANTITATIVE REASONING · FLASHCARDS
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QUESTION
What is the output of
L
(
x
)
=
2
x
L(x)=2^x
L
(
x
)
=
2
x
when
x
=
5
x=5
x
=
5
?
QUESTION
What is the output of
k
(
x
)
=
4
x
2
k(x)=4x^2
k
(
x
)
=
4
x
2
when
x
=
1
2
x=\frac{1}{2}
x
=
2
1
?
QUESTION
What is the output of
g
(
x
)
=
x
2
−
5
g(x)=x^2-5
g
(
x
)
=
x
2
−
5
when
x
=
3
x=3
x
=
3
?
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ANSWER
g
(
3
)
=
4
g(3)=4
g
(
3
)
=
4
. Substitute
x
=
3
x=3
x
=
3
into
g
(
x
)
=
x
2
−
5
g(x)=x^2-5
g
(
x
)
=
x
2
−
5
to get
9
−
5
=
4
9-5=4
9
−
5
=
4
.
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