@ptc-3682623 wrote:
I do not know what I do wrong in sample. I can't plot graphs.
How can you expect a plot without providing any values??
Here is a simple fix by providing the necessary values via a global assignment. What did you mean with the second argument 0.1 you wrote for the functions y1,y2?
You may also consider turning all your variables in functions of the five input parameters. It may be necessary to uses the "assume" statement in the symbolic evaluations to tell Mathcad which parameters are real, positive, greater than the other, etc. The symbolic results may be quite too large for Mathcad being willing to display. Not sure if you really need symbolic results anyway.
Mathcad15 worksheet attached
Not allowed to edit the post I just made, so the remark here in a follow up.
If the goal is just to plot the ellipse, a parametric representation might be more appropriate:
(The absolute values aren't strictly necessary)
I may be blind but as far as I can see your three answers don't take into account the questioner's file and his question about it? They were just triggered by the subject "plot an ellipse", right? 🙂
As far as your plotting of implicit functions concerns I strongly would suggest to use Viacheslav N. Mezentsev's function "implicitplot2d" - it usually gives a better result much faster.
See her the use for your example of an ellipse and a hyperbola:
P.S.: Of course you don't need implicit plots at all for conic sections (ellipse, hyperbola, parabola) as you always can find a parametric representation to plot it directly.
Afterthought
Here is what I was talking about when I wrote that you can always find a parametric representation for a quadric (conic section):
Mathcad 15 worksheet attached
OK! But!
1. We MUST use units in this problem. It is modern standard!
2. KISS - Keep it simple, stupid!
3. Can you solve with Мезенцев tools this problem?
@ValeryOchkov wrote:
OK! But!
3. Can you solve with Мезенцев tools this problem?
You can do it like this
@ptc-3682623 wrote:
The same problem. Sample in attachment.
No, its not the same problem! The entries on the abscissa and the ordinate must correspond. If there are less entries on the abscissa, the existing ones are matched with those on the ordinate and the rest of the ordinate entries are matched with the last entry on the abscissa.
You should also change the number format, otherwise you would see just zeros at the ordinate. Alternatively it might be better to multiply the values by 10^9 tp represent nm instead of m. You know you can work with units in Mathcad from the start? Its a valuable feature you sure should try.
