**Block Category:** Arithmetic

**Inputs:** Real or complex scalars, vectors, or
matrices.

**Description:** The 1/X block produces the inverse of
the input signal. If a vector or matrix is fed into a 1/X block, the result will
be an element-by-element inversion of the vector or matrix (that is, [one
divided by the element] operation). This is not equivalent to a normal vector
pseudo-inverse operation or a normal matrix inverse operation.

Use the invert block to compute the matrix inverse of a matrix.

**Label:** Indicates a user-defined block label that
appears when **View > Block Labels** is activated.

**1. Computation of 1/X of a scalar**

Consider the equation *y= *1/25 realized as:

The incoming constant value of 25 results in 1/25 = 0.04.

**2. Computation of 1/X of a vector**

Consider the equation:

**z** = 1/**y**

where **y** = [-1 5.6 4], and where an
element-by-element inversion is implied. This equation can be realized as:

An element-by-element inverse operation is performed on the three elements in the scalarToVec block.

**3. Computation of 1/X of a matrix**

Consider the equation:

**Z** = 1/ **Y**

where

This is realized as:

When the simulation runs, the 1/X block performs an element-by-element inverse operation on the incoming matrix.