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thank a lot debabratanag!!!!
ur advise will help me i hope...

thanks a lot........
i got ur solution..
thanks once again 4 ur help..

QUES IS NT CLEAR..

if its neccessary to use all the domonds n pearls then ans is

=(n+k)! / n! k!

and if it is nt neccessary then ans is..

=2ⁿ2^{k _}1

im sure abt it..

anser is zero.

log(cot x)^{tan x}

= log cot x/cot x

apply l'hospitals rool...

1/cot x (-cosec² x)/cosec²x

=1/cotx=tan x

=0

hence ans should be 0.

plz raTE....

on this rank i think u havent called 4 counsilling...
anyway, there r privet eng colleges which take addmissions even of 2 lakh rankers.. so u can get some college.. ofcourse it'ii be some lower grade but still u can perform well in future..

thanks...

some help plzzz

hi everyone!!!

im really in a gr8 problem... i dont know y but im always scared of organic chemistry and i dont know any thing abt it.. my maths n physics are strong enough but i always lag behind coz of chemistry n especially organic..

im jus getting very upset coz i dnt know any basic consept and noonwe is ready to deal wid me.. i know if i get a proper sourse i have enough ability to perform well in chem.. can u ppl help me out by suggesting books,how to start it or even ur supportive responce willhelp me to gain inspiration...

the correct ans is 25cm.. but ur proceedure may be correct. plz can u help me out by some usuful hints abt this ques which will help me to get the ans(not neccessorily the whole solution but imp hint)..
thanks..

Two blocks A(5kg) and B(2kg) attached to the ends of a spring constant 1120N/m are placed on smooth horizontal plane with the spring undeformed. simultaniously velocities of 3m/s and 10m/s along the line of the spring in the same direction are imparted to A& B then:

(a)what is the maximum extention of the spring?

(b)when does the first maximum compression occurs after start?

centripital force is a real force which is making the body move like that but the centrifugal force is the force experienced by the body undergoing circular motion.. means it is a force in respect to the body.whenever v deal with such problems we have to apply nlm usually but the body in motion is non inercial and hence we need to apply pseudo force which directs in opposite direction of the force which makes it accelerated hence a force is indicated in opposite direction of centripital force........ the whole story is only this much but the thing which is confusing u is the fact that this psedo force is named as centrifugal force...