If G is a group, G=(F(R), +), F(R) set of all real valued functions.
H={f€F(R) ; f(-x)=-f(x)}
Is H a subgroup of G?
My solution.(Click on link..I have not shown th associative prt coz addition is always associative) please let me know if iam correct.
https://ibb.co/sPzHg6m
https://ibb.co/sPzHg6m