![]() ![]() In matrix algebra, the inverse of a matrix A is a matrix which reverses the operations performed by A if y = A x, x = A -1 y. Inverse functions need not be unique: for example if y = x 2, x = ± √ y. While for some functions, for example the linear function, the inverse is of the same form as the original function, for many other functions this is not the case. The inverse of the inverse function is the original function. If y = f( x), then the inverse function can be written x = f -1 ( y). A function which reverses the effect of another function.Type of: function, map, mapping, mathematical function, single-valued function A function obtained by expressing the dependent variable of one function as the independent variable of another f and g are inverse functions if f(x)=y and g(y)=x.
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