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Using function simple equation doesn't work

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Hello guys,
Could you tell me why my function doesn't work, without block "fcn" - "Pikr1" everything works and scope shows me results.
How to use this "fcn" block, I would like to put there my own variable which is counted from output "p".
matlabscreeen.JPG
Greetings,
Krystian

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gonzalo Mier
gonzalo Mier 8 May 2019
편집: gonzalo Mier 8 May 2019
Next time, I ask you to add more info so people can help you easily and not only with a photo.
The problem here is the block fcn "Pikr1" accepts as parameter a formula with the input u. So if you want to do p*p you have to input in the fcn block the formula u*u.

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Krystian Wiewiór
Krystian Wiewiór 9 May 2019
편집: Krystian Wiewiór 9 May 2019
Thank you,
It works, but what in situations if I have many inputs and need to write an equation in one "fcn" block.
I know it is possible with "MUX" but what should I do next with this?
Greetings,
K.
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I think I found out the answer I just write "u(1)*u(2)" for example

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gonzalo Mier
gonzalo Mier 9 May 2019
You are right, use "u(1)*u(2)"

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