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Applying L'Hospital's rule is not allowed

Applying L'Hospital's rule is not allowed-example-1
User Yevgeny
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1 Answer

2 votes

Answer:

-1/2

Explanation:

lim x-> π/2 cos x /(2x-π) =

lim (x-π/2)->0 sin (π/2 - x) /2(x-π/2) =

lim (x-π/2)->0 - sin (x - π/2)/2(x-π/2) = -1/2

User Veelen
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