nope
\lim_{n\rightarrow \infty }(\left(n^{2}-n^{3})^{1/3}+n \right)
not my doubt......found it gud
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6 Answers
xYz
·2009-12-07 21:46:28
ur limit is :
n(1-(1-1/n)1/3)
expanding the underlined expression using newton's binomial theorem we get the answer?
wats ur approach?
Che
·2009-12-07 21:48:44
well i had a diff method
use of this formula
a+b=a3+b3a2-ab+b2 somwhere :P
lim n→∞ (n.(1n-1)1/3 +n)
lim n→∞ n( (1n -1)1/3 + 11/3)
now apply this formula
a+b=a3+b3a2-ab+b2