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(\partial)/(\partial x)(18ye^{9x})
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∂
∂
x
(
1
8
ye
9
x
)
=
1
6
2
e
9
x
y
Show Steps
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∂
∂
x
(
1
8
ye
9
x
)
=
1
6
2
e
9
x
y
steps
∂
∂
x
(
1
8
ye
9
x
)
Treat
y
as
a
constant
Take
the
constant
out
:
(
a
·
f
)
′
=
a
·
f
′
=
1
8
y
∂
∂
x
(
e
9
x
)
show steps
Apply
the
chain
rule
:
e
9
x
∂
∂
x
(
9
x
)
=
e
9
x
∂
∂
x
(
9
x
)
show steps
∂
∂
x
(
9
x
)
=
9
=
1
8
ye
9
x
·
9
Simplify
=
1
6
2
e
9
x
y
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