The functions in which roots involved are such that the value of the expressions remain unaltered, when they are interchanged are called

The functions in which roots involved are such that the value of the

1.	The functions in which roots involved are such that the value of the expressions remain unaltered, when they are interchanged are called
A.	A - symmetric functions
B.	symmetric functions
C.	hyperbolic functions
D.	synthetic function
Answer» C. hyperbolic functions