Question: Code in C++ please. Write a recursive function to find the sum of the first n integers, i.e. the sum 1 + 2 + 3
Code in C++ please.
Write a recursive function to find the sum of the first n integers, i.e. the sum 1 + 2 + 3 + 4 + . + n. Write a main program to test the function. Include a screenshot of the output. Verify the computer answer using the sum of first n integer formula you learned in Discrete mathematics. Derive a recurrence relation for your algorithm and solve the equation using expansion.
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