Exponents Logarithms E7Bdd3
1. **Stating the problem:** Understand the relationship between exponents and logarithms.
2. **Definition of exponents:** Exponents represent repeated multiplication. For example, $a^x$ means multiplying $a$ by itself $x$ times.
3. **Definition of logarithms:** Logarithms are the inverse operation of exponents. If $a^x = b$, then the logarithm base $a$ of $b$ is $x$, written as $\log_a b = x$.
4. **Formula:** The key formula connecting exponents and logarithms is:
$$a^x = b \iff \log_a b = x$$
5. **Important rules:**
- The base $a$ must be positive and not equal to 1.
- The argument $b$ must be positive.
6. **Example:** If $2^3 = 8$, then $\log_2 8 = 3$.
7. **Explanation:** This means that 2 raised to the power 3 equals 8, so the logarithm base 2 of 8 is 3.
This relationship allows us to solve equations involving exponents by converting them into logarithmic form and vice versa.