Exponent & Logarithm Calculator

The base of the logarithm or of the equation bˣ = y. It must be positive and not equal to 1. Common bases: 10, 2, and e ≈ 2.718.

The number the mode acts on:

• Logarithm: the x in log_b(x) — must be positive.
• Solve bˣ = y: the right-hand side y.
• n-th root: the number to take the root of.

Which root to take: 2 for the square root, 3 for the cube root, and so on. Odd roots of negative numbers are real; even roots need a non-negative value.