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Problem
Problem
The value of
lim
x
→
a
x
sin
a
−
a
sin
x
x
−
a
\lim_{x \to a} \frac{x \sin a - a \sin x}{x - a}
lim
x
→
a
x
−
a
x
s
i
n
a
−
a
s
i
n
x
is
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