1. What is This Calculator?

This calculator performs calculations with negative numbers using the formula: Result = num1 + (-num2). It's useful for various mathematical operations involving negative values.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( num1 \) — First input number (positive or negative)
• \( num2 \) — Second input number (positive or negative)

Explanation: The calculator effectively subtracts num2 from num1 by adding the negative of num2 to num1.

3. Practical Applications

Details: This calculation is fundamental in many areas including finance (calculating net values), physics (working with vectors), and general mathematics.

4. Using the Calculator

Tips: Enter any two numbers (positive or negative). The calculator will compute num1 plus the negative of num2.

5. Frequently Asked Questions (FAQ)

Q1: What happens if both numbers are negative?
A: The calculator works the same way. For example, -5 and -3 would calculate as -5 + (--3) = -5 + 3 = -2.

Q2: Can I use decimal numbers?
A: Yes, the calculator accepts and properly calculates with decimal numbers.

Q3: How precise are the calculations?
A: Calculations are performed with floating point precision and rounded to 4 decimal places.

Q4: Is this the same as simple subtraction?
A: Mathematically, yes. Adding a negative is equivalent to subtraction (num1 - num2).

Q5: What's the maximum/minimum number I can enter?
A: The calculator can handle very large positive and negative numbers within PHP's floating point limits.