We are executive members who pays $100/year. We also get cash back for every purchase and we pretty much get the membership fee back every year. We are a family of four and we buy most of our home supplies from Costco plus other stuffs. We love Costco but you have to know what you are buying.
Undefined is a term used when a mathematical result has no meaning. More precisely, undefined values occur when an expression is evaluated for input values outside of its domain. ( 1 if no complex numbers) ( 2 if no complex numbers) ( units in radians, no complex infinity)
Verify that the undefined function or variable is visible to the function at that point (it is on the path or in the current workspace) and that it has been defined before this line of code executes. Check if a datatip appears when you move the mouse pointer over the variable name on that line.