Evaluate the following limits:

and , then prove that f(-2) = f(2) = 1.

Given:

To Prove: f(-2) = f(2) = 1.


Proof: we have,


And,




Therefore, b = 1


Also,




b = 1


Thus,


On substituting the value of a and b we get,




So, f(x) = 1


Then, f(-2) = 1


Also, f(2) = 1


Hence, f(2)=f(-2)=1


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