Question: Therefore, using l'Hospital's Rule, lim x 0 + cot ( 5 x ) sin ( 1 5 x ) = lim x 0 + sin

Therefore, using l'Hospital's Rule,
limx 0+cot(5x) sin(15x)=limx 0+
sin(15x)tan(5x)
=limx 0+
15 cos(15x)5 sec2(5x)
.
As
x 0+,
15 cos(15x)
and
5 sec2(5x)
.

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