START Get the value of a number n Set the value of i to 2 Set the value of f to 1 While i is less than or equal to n (i ≤n) Set the value off to f * i Set the value of i to i + 1 Output f STOP
START Get the value of a number n Set the value of i to 2 Set the value of f to 1 While i is less than or equal to n (i ≤n) Set the value off to f * i Set the value of i to i + 1 Output f STOP
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question
![**Understanding the Algorithm:**
**Purpose:**
This algorithm is designed to compute the factorial of a given number `n`, but it starts the iterative process from 2 instead of 1.
**Detailed Explanation:**
1. **Initialization:**
- The algorithm begins by retrieving the value of an integer `n`.
- It initializes an index variable `i` to 2.
- Another variable `f` is initialized to 1, which will be used to store the factorial product.
2. **Iteration:**
- The process enters a loop that continues as long as `i` is less than or equal to `n`.
- Within each iteration:
- `f` is updated to be the product of its current value and `i`.
- `i` is then incremented by 1.
3. **Termination:**
- Once `i` exceeds `n`, the loop terminates.
- The algorithm outputs the final value of `f`, which holds the result of the factorial computation.
**Conclusion:**
The algorithm effectively calculates the factorial of a given number `n` (`n!`). However, noting that the iteration starts at 2, it assumes the initial product of 1 (`f = 1`) and multiplies this by all integers from 2 up to `n`. The final output is the factorial of `n`, i.e., `n! = 1 × 2 × 3 × ... × n`.
**Example:**
For `n = 5`, the steps will be:
- Initialize `f = 1` and `i = 2`.
- Iteration:
- `f = 1 * 2` → `f = 2`, increment `i`.
- `f = 2 * 3` → `f = 6`, increment `i`.
- `f = 6 * 4` → `f = 24`, increment `i`.
- `f = 24 * 5` → `f = 120`, increment `i`.
- Output `f = 120`.
Thus, `5! = 120`.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe6e77107-ef1d-4e39-badf-4decafa47f1b%2F6cb57d01-2410-4697-a235-ed07bd09e4c8%2Frt73mxs_processed.png&w=3840&q=75)
Transcribed Image Text:**Understanding the Algorithm:**
**Purpose:**
This algorithm is designed to compute the factorial of a given number `n`, but it starts the iterative process from 2 instead of 1.
**Detailed Explanation:**
1. **Initialization:**
- The algorithm begins by retrieving the value of an integer `n`.
- It initializes an index variable `i` to 2.
- Another variable `f` is initialized to 1, which will be used to store the factorial product.
2. **Iteration:**
- The process enters a loop that continues as long as `i` is less than or equal to `n`.
- Within each iteration:
- `f` is updated to be the product of its current value and `i`.
- `i` is then incremented by 1.
3. **Termination:**
- Once `i` exceeds `n`, the loop terminates.
- The algorithm outputs the final value of `f`, which holds the result of the factorial computation.
**Conclusion:**
The algorithm effectively calculates the factorial of a given number `n` (`n!`). However, noting that the iteration starts at 2, it assumes the initial product of 1 (`f = 1`) and multiplies this by all integers from 2 up to `n`. The final output is the factorial of `n`, i.e., `n! = 1 × 2 × 3 × ... × n`.
**Example:**
For `n = 5`, the steps will be:
- Initialize `f = 1` and `i = 2`.
- Iteration:
- `f = 1 * 2` → `f = 2`, increment `i`.
- `f = 2 * 3` → `f = 6`, increment `i`.
- `f = 6 * 4` → `f = 24`, increment `i`.
- `f = 24 * 5` → `f = 120`, increment `i`.
- Output `f = 120`.
Thus, `5! = 120`.
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