Fermat's Little Theorem states that if p is a prime number and a is an integer such that a is not divisible by p, then a^(p-1) ≡ 1 (mod p). As a result, if you multiply a by (p-1) and divide it by p, you get 1 as the remainder.

The de Moivre theorem explains how to calculate the powers of complex numbers.

To calculate the weighted mean, you need two sets of data: the values and their corresponding weights.

The Linear Independence Calculator determines whether a given set of vectors are linearly independent or dependent.