Q. 74.8( 5 Votes )

Evaluate the following limits:


Answer :



Since the form is indeterminant



Method 1: factorization





Since a2-b2 = (a + b)(a-b)





= (2 + 2)(22 + 22)


= 32


Method 2: By L hospital rule:


Differentiating numerator and denominator separately:





= 4(2)3


= 32


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