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I am now trying to solve an exponential equation in MATLAB as a part of my assignment. It is easy to see that the equation exp(-t)+t*exp(-t)-n=0 would have two solutions, one greater than zero and one smaller. However, using just the solve function, MATLAB returns something called lambertw function and it can only eval() to the solution below zero, which happens not to be the one I want for the answer. Could anyone help me here? Thanks in advance for all the answers and comments! p.s. As an alternative, I am thinking about using Newton-Raphson method to solve it, but I wonder how is the speed

I am trying to automate process of generating Equations in Microsoft Word 2010 using VBA and inserting those into Excel since it doesnt support oMath object. Problem lies in oMath.BuildUp method. It doesnt interpret stuff like \sqrt, \times, \delta in the same way that it is interpreted when entered by hand. For example entering code Celsius = \sqrt(x+y) + sin(5/9 \times (Fahrenheit – 23 (\delta)^2)) into Equation will give this result http://i43.tinypic.com/10xc7zp.jpg which is fine. But when using macro VBA or recording macro this Method is not working as it should be and it gives result

I am looking for a C# dll to solve simple equation. Example .. 10 = 2 + 3 + x Result should be x = 5; Is there a free DLL? I've used this Math Expression Parsing library with positive results. The documentation he's provided was very useful to boot. http://www.codeproject.com/KB/recipes/MathieuMathParser.aspx?display=Print Your app can then accommodate ad hoc equations which the library will parse into component parts. You can then provide the values for required variables and it will evaluate the result. The library includes many function (trig, log, factorials, datetime, random, etc.) and

This seems like an incredibly simple and silly question to ask, but everything I've found about it has been too complex for me to understand. I have these two very basic simultaneous equations: X = 2x + 2z Y = z - x Given that I know both X and Y, how would I go about finding x and z? It's very easy to do it by hand, but I have no idea how this would be done in code. This seems like an incredibly simple and silly question to ask Not at all. This is a very good question, and it has unfortunately a complex answer. Let's solve a * x + b * y = u c * x + d * y = v I stick to the 2x2 case here. More

I have the following formula in LaTeX, based on Fisher's Exact Test . ( NOTE : requires the use of the amsmath package for \binom .) \begin{equation} P(i,j) = \sum_{x=|N(V_i) \cap V_j|}^{\min\{|V_j|, |N(V_i)|} \frac{ \binom{|V_j|}{x} \binom{|V - V_j|}{|N(V_i)| - x}} {\binom{|V|}{|N(V_i)|}} \end{equation} This renders the fraction portion with very small, difficult to read text: I would like my text more readable, as in the following example: equation with readable text in fraction http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0005313.e002&representation

I want to solve a set of equations, linear, or sometimes quadratic. I don't have a specific problem, but often, I have been in this situation often. It is simple to use wolframalpha.com , the web equivalent of Mathematica, to solve them. But that doesn't provide the comfort and convenience of an iPython shell. Is there a simple library to work on linear and quadratic equations from a python shell? Personally, I find it extremely convenient to use the Casio 991 MS scientific calculator. I know how to set variables, solve equations, and do a lot. I want such a tool preferably usable from within