👉 In mathematics, a remaindered function is a mathematical function that returns a value after performing some operation on it. The operation performed depends on the context of the function and its argument. For example, the function f(x) = x^2 + 1 would return a remaindered function if we were to divide by 3. The term "remaindered" can also refer to the result or outcome of a division operation in mathematics where the divisor is not equal to zero but instead equals the dividend