MODULUS / REFERENCE
Essential algebra formulas
Quick reference for equations, powers, logarithms and sequences.
| Symbol | Value or formula | Description |
|---|---|---|
| ax+b=0 | x=−b/a | Linear equation, a ≠ 0. |
| ax²+bx+c=0 | x=(−b±√(b²−4ac))/(2a) | Quadratic equation. |
| aᵐaⁿ | aᵐ⁺ⁿ | Product of powers. |
| logₐx | ln x / ln a | Change of logarithm base. |
| Sₙ | n(2a₁+(n−1)d)/2 | Arithmetic series sum. |
Values are provided for reference. Check the required unit system and conditions before engineering or laboratory use.