Question: 3. The given code in Figure 2 is written to measure the factorial of an integer number using the recursion concept. Using the following code,

 3. The given code in Figure 2 is written to measure

3. The given code in Figure 2 is written to measure the factorial of an integer number using the recursion concept. Using the following code, answer the following question: a. What is the graph representation of the factorial function? [4marks] b. What are the main test cases required to test the factorial function based on black box testing technique? [4 marks] #include using namespace std; int factorial (inta) { if(a>x; cout

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