Explanation and example

Choose x to the power y, the y-th root of x, or log base y of x. The logarithm is the number t for which y to the power t equals x.

Example: 2³ = 8, the cube root of −27 is −3, and log₁₀(100) = 2.

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Limits

A real logarithm requires x > 0, base y > 0 and y ≠ 1. Even roots of negative numbers, 0⁰ and zero raised to a negative power are excluded. In root mode, y must be a nonzero integer. In power mode, this calculator accepts negative x only with an integer y.