• =EXPR(head, arg1, arg2, ...) builds the Mathematica expression head[arg1, arg2, ...]. • Example: =EXPR("f","x","y") returns f[x,y]. • You can build any expression using nested EXPR calls. • Example: =EXPR("Sqrt",EXPR("Plus",EXPR("Power",A1,2),EXPR("Power",A2,2))). • If head contains #, head is automatically assumed to be a pure function. • Example: =EXPR("Sqrt[#1^2+#2^2]",A1,A2). • =EXPR(head, arg1, arg2, ...) returns #N/A if head or any arguments refer to an empty cell or an error. • =EXPR(range) trims empty cells and errors from the end of range. |
