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AP Calculus AB · Flashcards · Application
AP CALCULUS AB · FLASHCARDS
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QUESTION
Find
f
(
x
)
f(x)
f
(
x
)
at
x
=
0
x = 0
x
=
0
for
f
(
x
)
=
x
4
−
2
x
2
f(x) = x^4 - 2x^2
f
(
x
)
=
x
4
−
2
x
2
.
QUESTION
What are the critical points of
f
(
x
)
=
x
2
−
9
x
+
20
f(x) = x^2 - 9x + 20
f
(
x
)
=
x
2
−
9
x
+
20
?
QUESTION
Find
f
(
x
)
f(x)
f
(
x
)
at
x
=
5
x = 5
x
=
5
for
f
(
x
)
=
x
2
−
5
x
f(x) = x^2 - 5x
f
(
x
)
=
x
2
−
5
x
.
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ANSWER
f
(
5
)
=
0
f(5) = 0
f
(
5
)
=
0
. Substitution shows
x
=
5
x=5
x
=
5
is a root of the function.
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