1arey brackets main sab kuch limit ke andar hai....be sure about that....
first term par limit ka ans toh 2/5 hi aa raha hai....
\lim_ {n\rightarrow \propto \left[\frac{1^{2}+2^{2}+....n^{2}}{5n^{3}} + 4\left(\frac{1^{3}+2^{3}+....n^{3}}{3n^{4}} \right]}
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9 Answers
11i too getting 2/5 after solving...did a silly mistake....
now i tell u the options....
a)9/10
b)1/10
c)1/2
d)1/3
and it says ans is (a)....