A spring of force constant 'k' is stretched by a small length 'x'. The work done is stretching it further by a small length 'y' is

A spring of force constant 'k' is stretched by a small length 'x'. The

1.	A spring of force constant 'k' is stretched by a small length 'x'. The work done is stretching it further by a small length 'y' is
Answer» `(1)/(2)k(X^(2)+y^(2))` `(1)/(2)k(x+y)^(2)` `(1)/(2)k(y^(2)-x^(2))` `(1)/(2)KY(2x+y)` Answer :D