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m_ridzon4-Participant
4-Participant
March 17, 2010
Question

Using results from Solve command

  • March 17, 2010
  • 1 reply
  • 3118 views
I am running MathCAD 14 on WinXP. I have an equation with one variable in it, b. See my attachment. I type the equation and then use the Solve keyword to display the solution for b. Since b is a cubic in the equation, it returns three results. Here is my question...I can't figure out how to use b vector results in subsequent operations. Typically, when I want to use a variable in subsequent operations, I will first define the variable with the colon key and the variable is then defined and usable. After using to Solve keyword to display b, I don't know what to do to use b later in other operations. Any input? Thanks, M Ridzon

1 reply

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Philip.Oakley1-Visitor
1-Visitor
March 17, 2010
Usually you assign (:=) the Solve on the left, so that the resuklt of the -> evaluation is associated with the new formula on the right. This can aslo be done on a new line B(param):= b[0 -> xxx This will make B() a function of the symolic evaluation of the first (zeroth) expression of b Philip PS haven't actually opened the file - I'm on V11 here.
M
m_ridzon4-ParticipantAuthor
4-Participant
March 18, 2010
Philip, I resaved it in Ver11 and have attached it here. I'm a little confused with your reply. Would you mind opening my attachment, making the suggested changes, and reposting so I can see what you mean? Thanks, Matt
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RichardJ19-Tanzanite
19-Tanzanite
March 18, 2010
Mathcad has two calculation modes that are largely separate: symbolic and numeric. Symbolic evaluation of an expression does not automatically result in a numeric assignment. Richard
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