Q Continue 2 power functions that this is the two-valued function (the sign ± before the square root symbol - Maths - Relations and Functions

Question

Q Continue 2 power functions
that this is the two-valued function (the sign ± before the
square root symbol says about this) Such functions are not studied
in an elementary mathematics, therefore we consider usually as a
function one of its branches: either an upper or a lower branch

Aarushi Mishra · Accepted Answer

Explaination of the texty=±xFor one value of x>0 there are two values of y
 So this is not a functionIn a function, one element of domain is exactly mapped with a unique element of co-domain
 This definition is violated here

Q. Continue 2 power functions that this is the two-valued function (the sign ± before the square root symbol says about this). Such functions are not studied in an elementary mathematics, therefore we consider usually as a function one of its branches: either an upper or a lower branch.

Q. Continue 2 power functions
that this is the two-valued function (the sign ± before the square root symbol says about this). Such functions are not studied in an elementary mathematics, therefore we consider usually as a function one of its branches: either an upper or a lower branch.