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Results tagged with equation-solving
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user 18811
Questions on the analytic and numerical equation solving functions of Mathematica (Solve, Reduce, NSolve, FindRoot, DSolve, RSolve, etc.).
2
votes
2
answers
2k
views
Solve an equation with specific domain?
How can I write a code in Mathematica to solve an equation with variable in specific domains? For instance, I want to write a code for
Solve[{2 x + 1 == y && x > 0 && y > 0}, {x, y}, Integers] // Col …
- 848
0
votes
1
answer
183
views
Solve an equation with two specific domains?
In Solve an equation with specific domain?
I asked how to write a code in Mathematica with one specific domain for one of its variables. Now I have a questions:
If two of the variables are from spe …
- 848
1
vote
2
answers
583
views
determine the coefficients of a quadratic equation with "Solve"
Assume we want to determine the coefficients (integer) of a quadratic equation by having some information about the input and output values. If I enter the input and output individually before the com …
- 848
0
votes
1
answer
91
views
Produce result faster than "Table[If[...]]"
I would like to generate a list of output satisfying some condition for instance an equation but faster than the following code:
t=4;p=20;
Union[Flatten[Table[If[t<=(4a b d-1)c/(a+b)<=t+1,{(4a b d-1) …
- 848
0
votes
1
answer
70
views
remove one of the column in the output of Solve command
I would like to remove one variable in the output of the "Solve" command without changing the rest. For instance, in the following code
p = 6;
A = Solve[{p == x + y + z + t && x > 0 && y >= x && z >= …
- 848