lim_(x->b)(x^(7/3)-b^(7/3))/(x^(9/4)-b^(9/4))=?
A. 28/(27)b^(1/(12)
B. 27/(28)b^(1/(12
C. 28/(27)b^(3/(12))
D. 28/(27)b^(5/(12))
সঠিক উত্তরঃ
A.
28/(27)b^(1/(12)
Explanation: 
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