Mupad - using brackets in statements

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Lana 2013-12-3

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关闭： MATLAB Answer Bot 2021-8-20

This might be a silly question, but can anybody explain why this assignment in Mupad does not produce an error:

a:=1000(9-x)

I am trying to show students most common errors, and this was supposed to be an example of how they need to always use multiplication sign, however Mupad obviously thinks this is a valid command and assigns a = 1000. What does it think (9-x) is then?

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Answer 1

Walter Roberson 2013-12-3

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MuPAD tries to be smarter about recognizing implied algebraic operations, so it is probably treating that as a multiplication, 1000*(9-x)

There are some other stranger possibilities that I cannot test as I do not have Mathwork's Symbolic Mathematics Toolbox

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Answer 2

Lana 2013-12-4

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Many thanks, however I do not think that Mupad treats it as a product - as x is not defined. I am more inclined to think that it treats is as an index or something but wanted to see if anybody knows for sure...