If a is any integer, then a x 0 = 0 x a = ……
-a
a
1
0
Any integer multiplied with 0 gives 0.
If a' is any integer then a+0=------------- = --------------
Name the additive identity.
If n is any integer, then ∫π0ecos2x cos3(2n+1)x dx= [IIT 1985; RPET 1995; UPSEAT 2001]