Polymath 5.1 Great equation solver:

 HI everyone !

 I am a great admirer of the ability of polymaths to solve non-linear explicit/implicit equations as well as solving differential equations with the great ease  which is very much required in Thermodynamics and Chemical Reaction Engineering courses ;but guys there are some things I don't like about this software.

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1. You cannot select simultaneously a set of equations and paste them in a new polymath file 5.1 ,you have to do it one by one.

2. And, guys most importantly choose the right equation solver in the first time otherwise there is no way to switch to a different solver with all the equations written in other solver. Also define the independent variable before you start entering equations just to avoid mistakes.

3. It cannot solve differential equations with two independent variable.

4 Option for graph is not available with NLE solver and even in DEQ solver we can plot the graph between single dependent and independent variable.

The feature for  Graph generation is awesome .Though nowadays many people use Matlab but my personal observation is that solving such NLE and DEQ equations in polymaths is more comfortable job because in matlab while using fsolve function the variables in the equation needs to be converted in a specific variable format ( x(i), i= 1,2.......no. of variables). 

Enjoy solving with above tips in your mind to save your time..........................

Follow these link to learn how DEQ and NLE solvers work   

a) Differential equation solver: 
http://www.polymath-software.com/PolymathHelp/deq.htm

b) No-Linear equation solver:

 http://www.polymath-software.com/PolymathHelp/nle.htm

Polymath 6.0 also gives the facility for solving ODE's and it is an advanced version with much improved interface and interactive ability. 

Solving ODE's with polymath 6.0 follow this link:

http://www.polymath-software.com/PolymathHelp/ODE_Macro.htm#Installation%20of%20the%20ODE_Solver%20Add-In