- #1
lkh1986
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Homework Statement
Is there any difference between the two notations below? Or can they be used interchangeably?
[tex]\tilde{x}[/tex] and [tex]\underline{x}[/tex] (not an underline, but the tilde is at the bottom of the unknown x)
Homework Equations
The Attempt at a Solution
From my observation, [tex]\underline{x}[/tex] is mostly used to denote a row matrix, or a vector, while [tex]\tilde{x}[/tex] is used to denote a vector function, is it correct? Thanks.