LimitsHard

Question

The value of equals

Options

A.2
B.2√3
C.-2√3
D.does not exist

Solution

L =
Let   θ = cos-1 x  ∵  As x → ∴  θ →
⇒ L =
Now  LHL =      

Also, RHL =
= - 2√3
⇒  LHL ≠ RHL    ∴   Limit does not exist

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