Mathcad

I'm using matchcad prime 3.1 for the very first time to solve curve intersections as below (which I have a ton of). I know I have to use solve block, but I can get it to work. what am I doing wrongly?y1:=86y2:= -0.0000054527x^3 + 0.010903836x^2 + 0.0714244709x + 74.18816x:=1         y:=1y1(x) = y2(x)y=y1(x)find(x,y)

I'm attaching a simple file that uses AdamsBDF to solve a spring/mass motion problem.  I added units to everything and it worked perfectly, but then I added an "if" statement that generates a ramp function and tried to use it in the D(t,X) matrix and I get a units error even though the ramp function spits out Newtons.You can reproduce the above by toggling which F(t) is disabled or enabled.If you want to look at the file (Prime 3.0 format) and provide feedback, I would appreciate it! 

Hi,The following is the equation in which , the value "f" should be zero, but the integration limit has to change with the y1 value,i.e if y1<z1 the equation will be same as shown,if z1<y1<z2 , then y1 must be in the P2(z) integration limit ,also if z2<y1,then y1 must be in the P3(z) integration limit Keeping the fact that using trial and error "f "must be zero and the equation must change the integration limit as per the "y1" value.                                                                                           &nbsp

So I'm doing some engineering calculations and wants to solve for an unknown in a algebraic expression with only one unknown.Does MathCad have support fort that? It only seems to work when I solve it my self, but not having to throw letters left and right that's why I would want too use MathCad in the first place.I've simplified the problem:http://i.imgur.com/jS3P0qQ.pngThere has to be a way right?

Hi Folks,I think I have an easy question.  I'm trying to transfer MCAD 15 from an old laptop to a new one.  Does PTC allow this?  If so, what do I do?Thanks for your help.Mark

Hello all,Hoping someone can help me save a hours of work by recovering someway somehow a file that froze while saving and now will not open. It was done in Mathcad Prime 3.0. It does have some screen grab graphics inserted into it.

Mr. Sheehan's latest blog on text formatting has me playing, first in Prime 3.0  (we haven't upgraded to 3.1 yet,)then in version 15.  I moved to 15 after I couldn't find an infix function operator in Prime.  You can do the same trick in 15 (without the double quotes.  I typed an a to start a math region, then "cntrl-shift-k" to tell Mathcad that what was coming was a special character, then "alt 0177" to type the ± character.  (That trick works in most places, including right here.)  Then "cntrl-shift-k" again to get Mathcad out of special character mode and parenthesis, x, and y.  Delete the a and you have    ±(x,y)     and you can proceed to define your function,  If Prime had an infix operator, you could do (like 15):

In Mathcad 15 and earlier, there was an inverse temperature unit (actually a post-fix unary operator) for /°F and /°C.  These operators would convert a temperature to the desired units and then strip the units off.   i.e.  if T:=1100°F, then T /°F = 1100 (no units)If I convert a Mathcad 15 worksheet with this construct in it to Prime 3.0, I get the /°F operator/unit in the Prime worksheet and it appears to work correctly.However, this "unit" is not on the Units drop down menu or the Operators drop down and for the life of me, I can't figure out how to type this unit/operator in Mathcad Prime 3.0.  I've tried using T · "/°F" to get the string literal and then removing the quotes and setting the Units label, but I get an error that this has to be a scalar.Anybody know how to do this?  I can't find it in the help system either - it is silent on /°F. Jeff

Can I shade the area between 2 functions? Is it as simple as int(f(x) - g(x)) or something more involved?Also I would like to plot the intersect of 2 functions and label the point with coordinates - doable?Many thanks in advanceJoe

I would like to plot directly from a function I've written in Mathcad 15 (MC15) to plot data across values of one parameter, input as either a range variable or a vector, but am unfortunately unable to make this work.  The function, Tsrfc() calls a solve block in a fashion similar to the quicksheet Parameterizing Solutions, and like that example includes units.  Tsrfc() is validated using a thermal analyzer application, but currently works for only one value of insulation thickness, tinsl.  Within the MC15 Area named Geometry examples of attempts to implement tinsl as a range variable [error message: This variable must be a scalar or matrix] and as a vector [error message: No solution was found.  Try changing the guess value or the value of TOL or CTOL] can be seen, temporarily deactivated by a leading underscore, _.If plotting directly from a call to this function in a worksheet is not possible, then I would like to call the function in an in-line program, populati

hello Folks,the first MC15 sheet (find_1) has a solve-block which doesn't compute. The second (find_2), with a slightly different definition, however does. Can anybody explain why this is the case?Tanks in advanceRaiko

Hi all,do you know how to read the stiffness matrix?I've read of a method for understand whether the K matrix is ill-conditioned.It consist in the calculus of the condition number of K expressed as the ration between the max and min value of the eigenvalues of K.How can I do this? (also utilizing Mathcad)

Hello, Everyone.Need help with creating a function L_(X,Y) with output as the above. (green highlight)Thanks in advance for your time and help.      Regards. Loi.Message was edited by: Loi Le

Hello all (Hola a todos)I have a problem viewing , multiplication symbols and parentheses seen incorrect  , as shown in the image:(Tengo un problema de visualización, los símbolos de multiplicación y paréntesis se observan erróneos como se muestra en la imagen)I would appreciate your answers to solve the problem.(Agradecería mucho sus respuestas para solucionar el problema.)Note: I'm using windows and Mathcad 15I'm using windows and Mathcad 15Nota: Yo estoy usando windows 7 y mathcad 15.

Hello,I know that mathcad variable may drive Creo dimension.But I want an Attribute of Windchill to be stored in Mathcad.My goal is as follows: being TOP of the tree, takes in attribute data.Pass on information to either Creo or Mathcad. (assuming, Creo and mathcad can inter change data)And work through my data, overwrite as need be. And store Over written data every where. ( I have seen in mathcad, over written data may be accomodated. )   Is it possible?Thank you for your time and efforts in advance.Werner Exinger master possible?  Please assist.

Hi,Is it possible to call from within a worksheet, with parameters, to another worksheet that takes in as input the parameters of the call function and then runs and calculates the whole called sheet.Thanks in advance,Hussein.

Where might I find the Mathcad sheet for bolted joint computations, cited in SANDIA National Laboratories Report AND2008-0371, "Guideline for Bolted Joint Design and Analysis: Version 1.0", issued January 2008?

Hi,I want to plot the 2 equations in mathcad,The two equations are,2x^2+3y^2=59 (circle)4y=x+8 (straight line)these examples are used in Find command in mathcad.I attached my code below.

I'm using a Given ... Find solve block in a function.When I call the function with an argument, sometimes the result has a positive sign, sometimes negative.  Mathematically it is correct, but I can't figure out why it's giving sign changes, and I only want positive results.The seeded guess value is positive.  If I seed the guess value to high to try to sneak in to the solution from the high side, the function fails frequently.I tried adding an inequality inside the solve block (R_guess>0 in) to try to force a positive result.  The function fails all the time.Looking for suggestions to get only a positive result from the Given ... Find function.

In Mathcad 15 you can break an expression into two or more lines using Ctrl Enter. How do you do this in Prime 3.1?@

Hello everyone!I don't normally use Mathcad, so my question might seem easy for you.Is it possible to make Mathcad compare values of two variables and display the result in some way?For example, somehow make user know that variable A is bigger that varable B?

Hello, I have an array of numbers. I don't know the number of members. I want to pick the member at the middle (or close to the middle if the number of members is even).Is there any function in mathcad for doing this job? Could you help me with this?Thank you

There hangs a chain composed of two parts with different linear density (kg/m). Given two lengths of the parts and coordinates of two points of attachment of this composed chain. It is necessary to determine the coordinates of the connection point of the two parts of the chain and the point of minimum slack.Old catenary problem - Catenary with load

In the early days, Mathcad 12 was compatible to Autocad (2004) object by copy and paste.Is the latest Mathcad compatible to Autocad 2015?Thanks

I have been using Mathcad ever since release 2.5 [tells you how old I am].  Two weeks ago my laptop crashed and I was not able to recover anything.  I wanted to transfer my full Prime 3.1 license to my new Surface Pro 3, as it is becoming a very popular engineering platform.  Support could not install it as the Surface does not have an Ethernet card.  Support was able to only install Mathcad Express.  Is anyone using the full version of Prime 3.1 on Surface Pro 3?  Thanks.