👉 In mathematics, variations are mathematical concepts that describe changes in a function or another variable. They can be related to the properties of the function itself (e.g., whether it is increasing, decreasing, constant, etc.), as well as the behavior of the function in relation to its input variables. For example, in a function f(x) = x^2 + 3x - 4, we could vary the value of x by changing the sign and adding or subtracting constants to both sides