For a function of two variables, boundary value analysis yields,
🎥 Video solution / Text Solution of this question is given below:
In boundary value analysis, for $n$ variables, total number of test cases is:
$4n+1$
Here, the function has two variables.
So, $n=2$
Number of test cases:
$4n+1 = 4(2)+1$
$=8+1$
$=9$
Therefore, the general formula is $4n+1$ test cases.