A little confusion over x and y values

[hivesaeed4]

Suppose a function is defined as:

f(x,y)=0 for x=y=0

Does this mean that the function would be zero when both x and y are xero or when either one of them are zero?

 

[brydustin]

Suppose a function is defined as:

f(x,y)=0 for x=y=0

Does this mean that the function would be zero when both x and y are xero or when either one of them are zero?

It means that at the origin (x,y)=(0,0) or as you write x=y=0, that the function f(x,y)=0.
I.e. when BOTH are zero.

 

[hivesaeed4]

Thanks.