👉 The term "miconcave" is used in mathematics to describe a function that is concave up or concave down, but not both. This means that if you take an input value and apply it to the function, there will be either a positive (upward) or negative (downward) output depending on whether the input value is greater than or less than zero. For example, consider a function f(x) = x^2 - 4x + 3.