Skip to main content
Mike123451-Visitor
1-Visitor
August 22, 2018
Question

Iterate Simultaneous Equations

I'm trying to solve a system of simultaneous equations with a given value that changes. I attached a simplified worksheet to illustrate this. I used the variable 'I' to represent the position in the input matrix. I would like Mathcad to return the values of x0,y0, x1,y1, and x3,y3 all at one time for each value of Theta. I really don't know where to start on this. Any help would be appreciated.

 

Thanks

15 replies

Werner_E
Werner_E25-Diamond I
25-Diamond I
August 22, 2018

You may consider turning the solve block into a function dependent on theta:

B.png

Translate
    Fred_Kohlhepp23-Emerald I
    23-Emerald I
    August 22, 2018

    turn the solve block into a function.  (And be careful not to reassign variables!)

    Translate
    LucMeekes23-Emerald V
    23-Emerald V
    August 22, 2018

    Like this?

    LM_20180822_Simultaneous.png

     

    Success!
    Luc

    Translate
    Mike123451-VisitorAuthor
    1-Visitor
    August 23, 2018

    Thanks everyone for your responses. I thought that they were exactly what I needed, however when I went to apply the methods in my actual calculations of 11 equations, it will not solve. It will solve when the input angle is a given number (say 0 and 10 degrees), but fails when it is a vector consisting of the same angles. I attached a file illustrating this. Any idea why this is happening would be greatly appreciated.

    Translate
    Fred_Kohlhepp23-Emerald I
    23-Emerald I
    August 23, 2018

    You can't continue naming different things the same.

    Translate
    Mike123451-VisitorAuthor
    1-Visitor
    August 23, 2018

    Sorry, I should've been more clear on what I was doing. I put both angles in there so one could be dragged before or after the other to illustrate the problem I'm having. Ideally, I would only have the vector definition, but in the end I only have one definition of the angle. I need ThetaLT to be a vector that is used in the equations. I noticed the way you redefined it, ThetaLT is used but ThetaLTg is not used in the equations.

    Translate
    Terms & ConditionsAccessibility statement