limit of x is infinity xcos[π/8x]sin [π/8x] is equal to
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Step-by-step explanation:
As x→∞,cos(
8x
π
)→1
Looking at the rest of the part,
x→∞
lim
8x
π
→0
x→∞
lim
x.sin(
8x
π
)
=
x→∞
lim
x
1
sin(
8x
π
)
We multiply and divide by
8
π
=
x→∞
lim
,
8x
π
sin(
8x
π
)
×
8x
π
Now using the property of a limit,
y→0
lim
,
y
siny
=1
We get, applying the limit,
=1×
8
π
=
8
π
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