How can an image be added to Rmarkdown?

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An image can be added to Rmarkdown by including the path to the image file in the Rmarkdown code using the following syntax:

![alt text](path/to/image)

For example:

![R logo](https://www.r-project.org/logo/Rlogo.png)

This will add the R logo to the Rmarkdown document.

To add an image that is stored locally, the path to the image file should be relative to the Rmarkdown document. For example:

![My image](images/myimage.png)

This assumes that there is an "images" folder in the same directory as the Rmarkdown file, and that the image file is called "myimage.png".