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Solving non-linear (and linear) simultaneous equations with 'solve' 2

  Date Added: July 19, 2013  |  Visits: 204

Solving non-linear (and linear) simultaneous equations with 'solve'

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symsolvesimulv2.m can be easily adapted to solve more equations but as it stands it will solve 2 unknowns in 2 non-linear equations (can be linear too or a mixture).Big change: It now has data input integrity checking.At the MATLAB command-line prompt you run the 'symsolvesimulv2' m-file function with the correct vector arguments i.e. exponents, coefficients and constants in the equations in the appropriate order.>> help symsolvesimulv2 solves a system (a pair) of non-linear or linear equations or a mixture, returning a n x 2 column solution vector for x and y. The first parameter is a row vector (1 x 4) of exponents used in both equations. An exponent of one for both terms indicates a linear equation. The second parameter (1 x 6) is also a row vector of all the coefficients and the constants used in both equations. The order of both vector's elements is critical. Note that there may be more than 1 solution for x and y (sometimes complex) and that they are presented in a symbolic format at times rather than a pure numeric format. USAGE: symsolvesimulv2([ex1 ex2 ex3 ex4],[a b a1 b1 c1 c2]) a*x^ex1 + b*y^ex2 = c1 (1) a1*x^ex3 + b1*y^ex4 = c2 (2) i.e. >> z=symsolvesimulv2([1 1 2 2],[2 3 4 5 8 24]); 2 x + 3 y = 8 2 2 4 x + 5 y = 24 >> z z = [ 1, 2] [ 13/7, 10/7]These are the solutions for the 2 equations i.e. x = 1, y=2,x=13/7, y = 10/7.----------------------------------------------------------------The code I wrote for 'solvesimulv2' is attached. Save it to your working folder and run as above.

Requirements: No special requirements
Platforms: Matlab
Keyword: Complex Critical Format Presented Symbolic Times
Users rating: 0/10

License: Shareware Size: 10 KB
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