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    "# Plants\n\nPlants model the physical system being controlled, mapping a control input $u_k$ to an observation $y_k$.\n`h` always returns $y_k$ so the output can be fed directly into an observer block.\n\n<a href=\"../f_h_functions.html\">\n    <img src=\"../../../_static/figures/block_plant.svg\" />\n</a>"
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