Troubleshooting Mathematica 5: How to Fix Common Issues with Solving Equations

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SUMMARY

The discussion focuses on troubleshooting issues with Mathematica 5 when solving equations. A user encountered an unexpected output of "{{}}" when attempting to solve the equation "Solve[{ax + by == 0, cx + dy == 1}, {x, y}]". The solution emphasizes the importance of proper syntax, specifically the necessity of including spaces between variables and coefficients, such as writing "a x" instead of "ax". This ensures that Mathematica interprets the expression correctly as a multiplication operation.

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  • Knowledge of variable representation in programming
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KenKEN Stone
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When i input "Solve[{ax + by == 0, cx + dy == 1}, {x, y}]", the machine answered "{{}}", the answer is not what i want, i want to know if my mathematica 5 has some problems.
 
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Make sure you put a space between the factors like e.g. the "a" and the "x" in "a x". Otherwise Mathematica will see a variable "ax" which is not the same as "a" times "x"
 

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