Let the area bounded in the first quadrant by [x]+[y]≤n, where n∈R – InterviewSolution

1.	Let the area bounded in the first quadrant by [x]+[y]≤n, where n∈R is denoted by A(n). The value of A(n)−A(n−1)−n is equal to (Where [.] is greatest interger function)
Answer» Let the area bounded in the first quadrant by $[x] + [y] \leq n,$ where $n \in R$ is denoted by $A (n)$ . The value of $A (n) - A (n - 1) - n$ is equal to (Where [.] is greatest interger function)

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