392]\lim_{b\rightarrow a} \frac{\displaystyle\int_a^b \ln |1+(x-a)(b-x)|dx}{(b-a)^3}
11standard ques
(1)
put x=cos2θ and the ques is solved[1]
11
Mani Pal Singh
·2009-03-12 11:49:18
(2)
use l hospital
answer should come
1usin l'pithal one shud get
bt i m gettin x in num
1
°ღ•๓ÑÏ…Î
·2009-03-12 11:54:52
for d first q a bettr way is
multiply n divide by √1-x
nw substitue x=sin@
so ur num is cos^2@ d@
and de is 1-sin@
write num as 1-sin^2@
so ur q basically is( 1+sin@ )d@
39
Dr.House
·2009-03-12 11:55:48
mujhe samjha rahiin ho?????????
1
°ღ•๓ÑÏ…Î
·2009-03-12 11:57:43
jaise aap samjoh just postin a bettr way :P
39
Dr.House
·2009-03-12 12:02:15
3]\int_0^{\pi} |a\cos nx+b\sin nx|dx\ (n=1,2,\cdots)
