Write a tail-recursive function in Scheme or ML to compute n factorial (n !=∏1 ≤i ≤n i=1 ×2 ×⋯×n

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To compute the factorial of a number $n$, we can start with an initial value of 1 and multiply i

Write a tail-recursive function in Scheme or ML to compute $n$ factorial $\left(n !=\prod_{1 \leq i \leq n} i=1 \times 2 \times \cdots \times n\right)$. (Hint: You will probably want to define a "helper" function, as discussed in Section 6.6.1.)