`{:(,"स्तम्भ (A)",,"स्तम्भ(B)"),(1.,inttanxdx,a,(1)/(2a)log.(x-a)/(x+a)","xgta),(2.,int cot x dx ,b,(1)/(2a)log.(a+x)/(a-x)","x lt a),(3.,int sec x dx ,c.,log ( sin x )),(4.,int(1)/(x^(2)-a^(2))dx,d.,-log(cosx )),(5.,int(1)/(a^(2)-x^(2))dx,e.,log (sec x +tan x )):} `

Answer

`1 rarr d ; 2 rarr c ;3 rarr e ; 4 rarr a ; 5 rarr b `