Here in the simulink model, I can't define the block name with the equation. What is it called? How can I find it in the library browser?
I searched many blocks but couldn't find.

Here in the simulink model, I can't define the block name with the equation. What is it called? How can I find it in the library browser?
I searched many blocks but couldn't find.

The block you are looking at is the
Fcn block, that applies a custom function to the input.