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chanda ranjan Grade: Upto college level
        

 


lim         4x-1         






x->1/4    2x1/2 - 1

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

lim                 4x-1/2x1/2-1


x-->1/4


4x-1 can be written as (2x1/2 )2 -12                                   [a2-b2=(a-b)(a+b)]


                               =(2x1/2-1)(2x1/2+1)


now we have


 


 


lim x-->1/4  (2x1/2-1)(2x1/2+1)/(2x1/2-1)


lim x-->1/4  (2x1/2+1)


taking limit we get


 limit = 2 ans

6 years ago
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