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Can't edit equation system
Posted May 28, 2012, 4:19 p.m. EDT Version 4.2a 1 Reply
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Hi, all
I'm trying to modify some terms in equation system. I can input expressions I need. However, they automatically change to some strange expressions when I go back to check them after leaving the page. These automatically generated expressions are not the default ones either. Many redundant items and parentheses appear, such as ((((Jy)+(emw.Jiy))+(emw.Jdy))+(emw.Jiy))+(emw.Jdy).
Does anyone know how I can stop this strange thing?
Thanks!
I'm trying to modify some terms in equation system. I can input expressions I need. However, they automatically change to some strange expressions when I go back to check them after leaving the page. These automatically generated expressions are not the default ones either. Many redundant items and parentheses appear, such as ((((Jy)+(emw.Jiy))+(emw.Jdy))+(emw.Jiy))+(emw.Jdy).
Does anyone know how I can stop this strange thing?
Thanks!
1 Reply Last Post Jun 3, 2012, 3:17 a.m. EDT
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Posted:
1 decade ago
Feedback
I finally get around the problem, but still don't know why this happens.
For example, the default expression is Expr. What I'm trying to input is Expr1 + Expr. If I input Expr1 + Expr, later when I come back to the equation system edit page, they will become something like (Expr1 + Expr) + Expr. Then I just input Expr1, it automatically changes to (Expr1) + Expr, which is the correct one.
However, this trick does not work for an arbitrary expression.
I finally get around the problem, but still don't know why this happens.
For example, the default expression is Expr. What I'm trying to input is Expr1 + Expr. If I input Expr1 + Expr, later when I come back to the equation system edit page, they will become something like (Expr1 + Expr) + Expr. Then I just input Expr1, it automatically changes to (Expr1) + Expr, which is the correct one.
However, this trick does not work for an arbitrary expression.