## inverse

### y = 1/x

In mathematics, the inverse of an operation or function is the opposite or reverse operation or function. It is the operation or function that undoes or reverses the effect of the original operation or function. For example, if we add 2 to a number and then take away 2 from the result, we end up with the same number as we started with. These operations can be said to be inverse of each other.

Another example of inverse is finding the inverse of a matrix. This involves finding a matrix that, when multiplied by the original matrix, gives the identity matrix (a square matrix with all diagonal elements equal to 1 and all other elements equal to 0). The inverse of a matrix is a fundamental tool in linear algebra and is used in a variety of applications such as solving systems of linear equations, calculating determinants, and solving differential equations.

There are many other concepts that involve inverse, such as inverse trigonometric functions, inverse operations in modular arithmetic, and inverse relationships between variables. Understanding inverse relationships is an important skill in problem-solving and mathematics in general.

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