Pls tell me the method how its done??
Answer is A :(x square+a square)power1/2
1/2(x square+a square)power1/2-1 1/2(x square+a square)power-1/2
X/ 2whole under root of (xsquare +asquare)
1/2(x square+a square)power1/2-1 1/2(x square+a square)power-1/2
X/ 2whole under root of (xsquare +asquare)