Dear Student, limx→b x5-b5x10-b10=limx→b x5-b5x5-b5 x5+b5=limx→b 1x5+b5=1b5+b5=12b5Correct option is 3 Regards

FIND CORRECT OPTION?

Dear Student,

\lim_{x \to b} \frac{x^{5} - b^{5}}{x^{10} - b^{10}} = \lim_{x \to b} \frac{x^{5} - b^{5}}{(x^{5} - b^{5}) (x^{5} + b^{5})} = \lim_{x \to b} \frac{1}{x^{5} + b^{5}} = \frac{1}{b^{5} + b^{5}} = \frac{1}{2 b^{5}} Correct option is 3 .

Regards