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Mar 17, 2024
/Users/taoyiwei/Desktop/截屏2024-03-17 00.14.32.png
Generated Graph
Solution by Steps
step 2
The quotient rule states that
d
d
x
(
f
g
)
=
g
⋅
d
f
d
x
−
f
⋅
d
g
d
x
g
2
\frac{d}{dx} \left( \frac{f}{g} \right) = \frac{g \cdot \frac{df}{dx} - f \cdot \frac{dg}{dx}}{g^2}
d
x
d
(
g
f
)
=
g
2
g
⋅
d
x
df
−
f
⋅
d
x
d
g
, where
f
=
Y
2
f = Y^2
f
=
Y
2
and
g
=
x
g = x
g
=
x
..
step 3
Since
Y
Y
Y
is treated as a constant with respect to
x
x
x
,
d
d
x
Y
2
=
0
\frac{d}{dx} Y^2 = 0
d
x
d
Y
2
=
0
, and
d
d
x
x
=
1
\frac{d}{dx} x = 1
d
x
d
x
=
1
..
step 4
Applying the quotient rule, we get
d
d
x
(
Y
2
x
)
=
x
⋅
0
−
Y
2
⋅
1
x
2
\frac{d}{dx} \left( \frac{Y^2}{x} \right) = \frac{x \cdot 0 - Y^2 \cdot 1}{x^2}
d
x
d
(
x
Y
2
)
=
x
2
x
⋅
0
−
Y
2
⋅
1
..
step 5
Simplifying, we find
d
d
x
(
Y
2
x
)
=
−
Y
2
x
2
\frac{d}{dx} \left( \frac{Y^2}{x} \right) = -\frac{Y^2}{x^2}
d
x
d
(
x
Y
2
)
=
−
x
2
Y
2
, provided
x
≠
0
x \neq 0
x
=
0
..
C
Key Concept
Differentiation using the quotient rule
Explanation
When differentiating a function of the form
f
g
\frac{f}{g}
g
f
, where
f
f
f
and
g
g
g
are functions of
x
x
x
, the quotient rule is applied to find the derivative.
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