MySQL EXP() Function

The EXP() function in MySQL is used to calculate e raised to the power of a specified number. The constant e (approximately 2.718281...) is the base of the natural logarithms, and this function is useful when you need to perform exponentiation with the base e.

Syntax

EXP(number)

Definition and Usage

• The EXP() function returns e raised to the power of the specified number.
• The result is calculated as enumbere^{number}, where e is the Euler's number (approximately 2.718).

Parameter Values

Technical Details

• Works in: From MySQL 4.0
• Result: The result is a floating-point number which represents enumbere^{number}.

Examples

Example 1: Calculate e raised to the power of 1

SELECT EXP(1);

Result:

EXP(1): 2.718281828459045

Explanation: e1=2.718281828459045e^1 = 2.718281828459045, which is the constant e itself.

Example 2: Calculate e raised to the power of 2

SELECT EXP(2);

Result:

EXP(2): 7.3890560989306495

Explanation: e2≈7.389056e^2 \approx 7.389056, which is the value of e raised to the power of 2.

Example 3: Calculate e raised to the power of a negative number

SELECT EXP(-1);

Result:

EXP(-1): 0.36787944117144233

Explanation: e−1≈0.367879e^{-1} \approx 0.367879.

Usage Notes

• The EXP() function is particularly useful in fields involving exponential growth/decay models, such as finance, physics, and natural sciences, where exponential equations are commonly used.
• If you need the natural logarithm (logarithm base e), you can use the LN() function, which is the inverse of EXP().
• The EXP() function calculates values involving e and can handle both positive and negative exponents.

This function is commonly used in scenarios like compound interest calculations, population growth models, or other formulas involving exponential functions.