Exponent Calculator
What is an exponent?
An exponent, often referred to as a power or a superscript, is a mathematical notation used to indicate the number of times a base number should be multiplied by itself. It is a fundamental concept in mathematics and is typically expressed as a small number placed above and to the right of a base number. The base number is raised to the power of the exponent to calculate the result.
an = a×a×...×a
In the expression "an," where "a" is the base and "n" is the exponent:
- The base (a) is the number that gets multiplied by itself.
- The exponent (n) tells you how many times the base should be multiplied by itself.
For example:
- In 23, the base is 2, and the exponent is 3. This means you multiply 2 by itself three times: 2 × 2 × 2 = 8.
- In 52, the base is 5, and the exponent is 2. This means you multiply 5 by itself two times: 5 × 5 = 25.
Exponents laws and rules:
- Product Rule:
- If you have two exponential terms with the same base being multiplied together, you can add their exponents:
- am * an = am + n
- For example: 23 * 24 = 23 + 4 = 27
- Quotient Rule:
- When you divide two exponential terms with the same base, you can subtract the exponent of the denominator from the exponent of the numerator:
- am / an = am - n
- For example: 56 / 52 = 56 - 2 = 54
- Power Rule:
- When you have an exponent raised to another exponent, you can multiply the exponents:
- (am)n = am * n
- For example: (32)3 = 32 * 3 = 36
- Zero Exponent Rule:
- Any nonzero base raised to the power of zero is equal to 1:
- a0 = 1 (for a ≠ 0)
- For example: 70 = 1
- Negative Exponent Rule:
- If you have a nonzero base with a negative exponent, you can rewrite it as the reciprocal of the base raised to the positive exponent:
- a-n = 1 / an
- For example: 2-3 = 1 / 23 = 1/8
- Exponent of 1 Rule:
- Any nonzero base raised to the power of 1 is equal to itself:
- a1 = a
- For example: 101 = 10
These basic exponent laws and rules are essential for simplifying and manipulating expressions involving exponents. They provide a foundation for more advanced algebraic operations and help solve a wide range of mathematical problems involving exponential notation.
See also