_{[0 ]}^{[ ]}sin(2n-1)x/sinx dx(where n is an integer) is equal to

a.1

b.

c.2

d /2.

 

hi friend there are two methods

1st the short one

since all the options are independent of n hence it will be true for any value on n

put n= 1

you will get the value=

2nd long method

apply  F(x)dx from a to b=  ^F(a+b)dx

and evaluate you will get the same ans

if you have any problem plz nudge me

bye

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