User Portlet
| Discussions |
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| Thanks. This variant gives me the possibility better understand Dynamic[] command. |
| Hi. Psi function is function of one variable xi, which depends from x,y,t. So, we write explicitly this function , its derivatives and integrals to have finally ODE of one function psi of one variable z. I used z in final equation because xi is... |
| The answer is simple. In the first case you committed error in tick definition. You give ticks only for one axis. The ticks were changed to Automatic by Mathematica. You can write any numbers, for example Ticks->{-3,-2,2,5}. The ticks will be same as... |
| Thank you very march. It works. |
| Another way Clear[x, y, z]; HoldForm[(x + y)/z] /. {x -> 2, y -> 3, z -> 5} To calculate the expression use ReleaseHold[%] |
| Build in functions work faster than program code. |
| You try to DSolve[] nonlinear differential equation. The probability to obtain analytical solution is very small. Try to solve it numerical with NDSolve[]. |
| You can't 3Dplot your list because each point has 4 coordinates. Something is wrong with your question. |
| I think that you can write directly ![enter image description here][1] [1]: http://community.wolfram.com//c/portal/getImageAttachment?filename=Untitled-1_1.png&userId=973597 |
| I needed to make the first order Taylor series with the function Series. I received a second order term in the result. Mathematica version 11.0.1.0 on Mac. I think that something is wrong with the function Series[]. I take a simple function as... |