Mathcad

Dear all, I have just install Mathcad prime 7.0.0.0 with a trial license. However, It seems that the program does not work as it always shows the error " Cannot understand this syntax" even the simple calculation like 1+1=. All other functions do not work as well, although the program has been activated successfully. Please let me know how to fix the issue. Thank you very much Best wishes,  

I am trying to solve this equation using iteration and a solve block for Q without previously defining Q as for my application I would not have the value for Q. Am I on the right track here and if not could somebody point out my mistakes? All of my other variables are previously defined and the only thing I don't have defined is Q. I want to be able to spit out a value for Q given all the other variables definitions. Thanks in advance! Below is an attachment of the solve block, I can provide SS for the other variables as needed.

Working on a large worksheet and the embedded Excel tables become unstable after being edited. Message: "Excel is busy: Can't activate Excel...". Which means the entire worksheet stops working. Need to close the file and reopen. This feature is very convenient and I wished it worked better.

I have one solution of this problem Great Comet of 1811 - Wikipedia But my solution is in XY-coordinares and a nee in polar coordinates. Help please See pictures and the Prime 6 sheet    

Hi Guys, So i have an equation that can't solve with with units (except in a solve block, which isnt optimal for me) if i strip the units the equation solves perfectly. I really hope some of you wise mathcad experts can help me.

I have this problem of  "This value must be a function". I already checked everything twice with a friend and none of us find what is wrong. Please is someone can explain what or where is the problem.

Using units in Prime is extremely cumbersome compared to MathCad 15. Although I've tried to define new units globally, using the units labeling it doesn't seem to work. In combo boxes, can't define units containing exponents. There are common units used in Chemical Engineering that should be available such as mbar, cP, etc.

Hi folks,   so far I've noticed a few issues with Prime 7. The combo box doesn't accept exponents when defining values I doesn't also allow the unit for thermal expansion coefficient (1/K). It is not read in properly as it is considered a formula. However, the chart tools  only when changing the line character from solid to dotted it is properly displayed in the legend. you can't define units such as µV on the axis so the workaround is to copy and paste the µ from the character map. what irks me most is that logarithmic scaling is not displayed properly. The numbers on the axis are correct, but the axis representation is not. See attached images. has any body figured out how to change the steps on the logarithmic axis? It appears to be fixed. Raiko

Hi, How  can i use programming to plot a linear or exponential  rise and decay as shown  attachment with red mark. Only for areas marked in Red Jacob

Hello,I have a discrepancy in the results of the 2 transfer functions.The implementations in Mathcad and Matlab are identical, so normally I should have the same result.Mathcad result: Matlab result: What could be the reason why the 2 results would not be equal?Thanks.

anynone knows mathcad prime 8 news or roadmap?

Recently we started conversion of different MC15 sheets to PRIME 7. Although the amount of error solving after conversion take a lot of time, the results look promising. However for the large sheets, the system starts to drawn due to very high CPU,GPU and RAM usage. Just simple scrolling the PRIME 7 document seems impossible. One of our major company sheets, used for calculation of structural capacity of cranes, uses 6GB of RAM only for loading the sheet after conversion to PRIME. The "original"  MC15 version uses only 260MB of RAM in order to load it. Loading time for the PRIME 7 sheet is approx 7minutes, the MC15 version took 15sec. We are quite desperate with having a fully functional MC15 sheet converted to a PRIME 7 sheet that seems useless. Can anybody advise? Thanks in advance    André structural engineer      

Hello to all the community experts,I would like to carry out the stereographic projection on the sphere of the two parallel straight lines, fr1 and fr2, both lying on the plane z = 0. So I should see the segment P0P1 connecting the pole with a point on the straight line fr1 and the segment P0P2 connecting the pole with the straight line fr2 whose projections on the sphere are two circles passing through the pole. I've been trying for a few hours but without success. Anyone here, is able to do this?Thank you in advance.Attached is the file for one projection.

New to Mathcad. I am stuck at this for last 3 hours. I have a V as function of x, i defined x as an array now I want to plot V(x) on y axis vs x on x axis. It shows me errors like function is not defined and value must be function. Please see and help    

Hi, before i build some .dll files and work well in mathcad 15. I install mathcad prime 7 and try to reuse these .dll files, but cannot load dll function. These dll files are put in the folder "C:\Program Files\PTC\Mathcad Prime 7.0.0.0\Custom Functions". Or should i put them to another folder or something i should do previously?

Hello Everyone.   Ive not got much experience in Mathcad so hoping you can help me with a simple program I have been trying to write.  Basically I have set up a table, with two columns "a" and "b" and what I was looking to do was write a program that evaluates an if/else statement for each row.  If a is greater than 2 then carry out a+b if a is not greater than 2 then carry out a-b.    At the moment I can get it to work for the first part however when I add in the else statement it looks to me like a single row complying with the else statement means that this is applied to every single row rather than just the individual row.    Is it possible to have this program evaluating each row independently of each other?    I've attached my file and a screenshot of the sheet as well.     If you guys need more information please let me know.  Also I am no expert so if there are better ways of doing this, anything I have done that

Hello,I want to find out the intersection between these 2 graphs, how can I find it? Thanks.

Hi,I am running Mathcad 15 student edition on a Windows XP PC. I will be selling this PC in Canada, moving to England, buying a new PC which will run Windows 7 and installing Mathcad on the new PC. What are the steps I need to take to transfer the Mathcad license?Thanks

Hi there,   the PTC Mathcad help say if i want to use a matrix as Input Data for 3D Plots there are 2 ways:   • A 3-column matrix, where the three columns represent the x-, y-, and z-coordinates • A m*n matrix, where the cell’s indices represent the x- and y-coordinates and the cell values represent the z coordinates   I need the first one, but my Mathcad (using Mathcad 15) allways plots my matrix like the second case.   How can I change this and tell the Plot that my matrix has the coordinates in the collums and not int the indices and values?   thanks a lot ❤️

I need parameterized solution from two equations. Both equations have two variables in them. . I am using "find". I tried "solve" (not shown in attached file) as well but could not succeed. How to get it? I tried everything since past 3 days. Searched extensively in Mathcad community. Pls help me in getting it. Pardon, if this is too simple to answer, but answer pls......Thank you very much.

When i right click -> Insert -> Table, NOTHING happens. Nothing at all. Also nothing when i use the Insert -> Data -> table. This happens whether i open a blank document or in the middle of a document.I'm running Mathcad 15.0 (M010 [MC15_M010_20110622]) on Windows 8.1 with my schools license. I have tried compatibility mode for Windows 7, XPSP2 and XPSP3 and i have tried administration rights. My classmates can it to work though. (they run same MathCad but differnet Windows (not 8.1)). I have tried reinstalling mathcad several times. Nothing changes.I should mention that under the installation there is around 15 error messages that i can not get around (have to click ignore) because i have windows 8 and Mathcad does not support newer OS.How can i fix this without installing different Windows?

Hello,Shouldn't the graphs look the same? Thanks.

Is it possible to add information from the excel sheet in combo box? Also, is it possible to address a certain row within combo box from matrix or a specified table in the worksheet

Hello Everyone,The data for cornea topography is loaded in the worksheet attached. The contour plot is generated using the 2-D interpolation algorithm. However, when compared to the topography system's original performance, the plot has a very low resolution. How can I get a plot that looks like the system output?  I was also curious about how the data could be transferred and plotted in polar coordinates because I was having trouble mapping f(x,y) to f(r, theta) coordinates.   Any advice will be greatly appreciated. All the best, Payman.

I just started to use Mathcad... I was try to find the sqrt of a value in N/mm^2 and my end result was given in units (Kg^1/2) /(m^1/2)s... I do not understand why it is happening... Can anyone help me out...