int

well.. reduction formula not there in jee.... (damn sure)

even though the name is different i think this is very much from syllabus

∫tan^2n-2x(sec²x-1)dx

=(1/2n-1)-a_n-1

u can get the result from here

watz ans of 3rd one...[7]

Ist one;
a₁₌^Ï€/4∫₀tan²xdx
= ^Ï€/4[tanx-x]₀
= [(1-Ï€/4)-(0-0)]
= 1-Ï€/4

rest all are out of my head...

bilkul nahi!

u cant pick out things...

if not in syllabus,, i will never knw!

chem me syll hi khatam nhai hota mera! upar se out of syll ???

my God!

hum jo roz organic kar rahe hain, if i start picking, then i will show u uncountable things which are not in syllabus.

do as u wish..........

so wat?

1) easy one:

a1 = 1- pi/4

is the 3rd one 1/2[7]

yes u r correct subash.

wat about third one? and 4th one

a_n+1=(1/2n+1)-a_n

baaki do hi acche waale hain, use koi nahiin karra?

jee mein aane ka scope hai kya????[7][12]

achha q hai :)