Using Intersections to Solve Equivalent Functions
Algebra · Flashcards · Recall
ALGEBRA · FLASHCARDS
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QUESTION
What does it mean if
y
=
f
(
x
)
y=f(x)
y
=
f
(
x
)
and
y
=
g
(
x
)
y=g(x)
y
=
g
(
x
)
overlap completely?
QUESTION
What does a tangent intersection point correspond to for
h
(
x
)
=
f
(
x
)
−
g
(
x
)
h(x)=f(x)-g(x)
h
(
x
)
=
f
(
x
)
−
g
(
x
)
?
QUESTION
What is the domain restriction when solving
log
(
x
)
\log(x)
lo
g
(
x
)
equations by intersections?
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ANSWER
Require
x
>
0
x>0
x
>
0
(argument must be positive). Logarithms are undefined for non-positive arguments.
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