ACCEPTED SOLUTION
Accepted Solutions
What do you mean by "behavior not identical"?
In your first pic you showed the symbolic evaluation of an equation without using "solve" and so the equation was simply repeated (and a bit simplified).
In your last pic you show an equation symbolically evaluated with "solve,W" and consequently you get the equation solved for W.
This is exactly what Luc showed with your equation. But while you showed a linear equation in your last example, your first example is an equation of order three in w and so Mathcad gives you a vector with the three different solutions of this equation.
And, yes, those solutions are quite ugly:
You may assign the result to a function and evaluate it for different values of t:
You may also use this function for plotting:
In general you should attach the worksheet, not just a picture.
Other than that: Mathcad did exactly what you asked it to do. You asked a symbolic evaluation of the expression, and you got it: t expressed in terms of w. A bit nicer could be:
So here I asked to solve for t.
If I ask it solve for w, I get 3 possible answers (I'll show only part of them):
Note that each of the three answers involves t, the (other) unknown.
Success!
Luc
What do you mean by "behavior not identical"?
In your first pic you showed the symbolic evaluation of an equation without using "solve" and so the equation was simply repeated (and a bit simplified).
In your last pic you show an equation symbolically evaluated with "solve,W" and consequently you get the equation solved for W.
This is exactly what Luc showed with your equation. But while you showed a linear equation in your last example, your first example is an equation of order three in w and so Mathcad gives you a vector with the three different solutions of this equation.
And, yes, those solutions are quite ugly:
You may assign the result to a function and evaluate it for different values of t:
You may also use this function for plotting:
The 'behaviour' depends on what is known (numerically defined) and what not. Any variables that are numerically defined are replaced by those numbers. So with X, Y and Z not numerically defined you may get:
While, with Y and Z defined:
You can undefine variables numerically by self-assigning:
And the 'undefinition' applies to symbolics only, so you still can evaluate the result numerically also:
Success!
Luc
P.S. Why can you not attach Mathcad sheet files. Do you get an error message? What is it?
