category: command
excerpt: "Conic model of the elementwise inverse on positive orthant"
title: invpos
tags: [Second-order cone programming representable]
date: '2022-05-26'
sidebar:
  nav: "commands"
---

[invpos](/command/invpos) implements the elementwise inverse on positive orthant.

## Syntax

````matlab
y = invpos(x)
````

## Comments

The operator is implemented using a [graph representation](/tutorial/nonlinearoperatorsgraphs) based on [SOCP](/tags#second-order-cone-programming) and can thus only be used in scenarios where YALMIP can propagate convexity and use a conic model.
