IIT JEE , AIEEE Forum - Mathematics , Differential Calculus

little_genius

doesnt exist as it wud oscillate btw -1 and1

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there are 2 qsns.. plz mention which one u r answering ;)

elastiboysai

Hi

I think d ans for sin limit is 1 and cos limit is zero??

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your answer for sin limit is wrong
but cos limit is right.. post your soln..

elastiboysai

well

how i reasoned out is...

consider pi*

2*

n^2+n/2

n^2+n/2 is the sum of nos till n

under the condn lim n-->infinity

bcoz of the

2

the term will be rational

so itll be a rational no *pi

n so ull have cos(pi *

2*

n^2+n/2) lim n--->inf

to be sumthin like cos(pi/2*r)...

so its gotta be zero

n i now think sin limit doesn exist??

edit were do u wan me 2 put ()??

i thought itwas clear

cn u point out the pt of cnfus.

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umm.. i'm getting confused becoz ur not using paranthesis ( )
can u edit it a little??