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Let’s check out your problem:
For the function
f
(
x
)
=
7
(
x
−
6
)
f(x)=7(x-6)
f
(
x
)
=
7
(
x
−
6
)
, find
f
−
1
(
x
)
f^{-1}(x)
f
−
1
(
x
)
.
\newline
f
−
1
(
x
)
=
7
(
x
+
6
)
f^{-1}(x)=7(x+6)
f
−
1
(
x
)
=
7
(
x
+
6
)
\newline
f
−
1
(
x
)
=
x
7
−
6
f^{-1}(x)=\frac{x}{7}-6
f
−
1
(
x
)
=
7
x
−
6
\newline
f
−
1
(
x
)
=
(
x
−
6
)
7
f^{-1}(x)=\frac{(x-6)}{7}
f
−
1
(
x
)
=
7
(
x
−
6
)
\newline
f
−
1
(
x
)
=
x
7
+
6
f^{-1}(x)=\frac{x}{7}+6
f
−
1
(
x
)
=
7
x
+
6
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Math Problems
Calculus
Find derivatives of using multiple formulae
Full solution
Q.
For the function
f
(
x
)
=
7
(
x
−
6
)
f(x)=7(x-6)
f
(
x
)
=
7
(
x
−
6
)
, find
f
−
1
(
x
)
f^{-1}(x)
f
−
1
(
x
)
.
\newline
f
−
1
(
x
)
=
7
(
x
+
6
)
f^{-1}(x)=7(x+6)
f
−
1
(
x
)
=
7
(
x
+
6
)
\newline
f
−
1
(
x
)
=
x
7
−
6
f^{-1}(x)=\frac{x}{7}-6
f
−
1
(
x
)
=
7
x
−
6
\newline
f
−
1
(
x
)
=
(
x
−
6
)
7
f^{-1}(x)=\frac{(x-6)}{7}
f
−
1
(
x
)
=
7
(
x
−
6
)
\newline
f
−
1
(
x
)
=
x
7
+
6
f^{-1}(x)=\frac{x}{7}+6
f
−
1
(
x
)
=
7
x
+
6
Swap x and y:
Swap
x
x
x
and
y
y
y
to begin finding the inverse function.
x
=
7
(
y
−
6
)
x = 7(y - 6)
x
=
7
(
y
−
6
)
Solve for y:
Solve the equation for y to find the inverse function.
x
=
7
y
−
42
x = 7y - 42
x
=
7
y
−
42
Add
42
42
42
:
Add
42
42
42
to both sides of the equation to isolate the term with
y
y
y
.
\newline
x
+
42
=
7
y
x + 42 = 7y
x
+
42
=
7
y
Divide by
7
7
7
:
Divide both sides of the equation by
7
7
7
to solve for
y
y
y
.
y
=
x
+
42
7
y = \frac{x + 42}{7}
y
=
7
x
+
42
Replace with
f
−
1
(
x
)
f^{-1}(x)
f
−
1
(
x
)
:
Replace
y
y
y
with
f
−
1
(
x
)
f^{-1}(x)
f
−
1
(
x
)
to denote the inverse function.
\newline
f
−
1
(
x
)
=
x
+
42
7
f^{-1}(x) = \frac{x + 42}{7}
f
−
1
(
x
)
=
7
x
+
42
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\newline
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Find the derivative of
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Find the derivative of
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\newline
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x
)
=
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Find the derivative of
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\newline
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′
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x
)
=
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f
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)
=
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