Questions tagged [findinstance]
The findinstance tag has no usage guidance.
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Improve FindInstance, or better yet just Solve!
This one is seemingly not that complex, yet I am not getting Mathematica to return a solution in a timely manner: (I have 2 variables, t - an angle and k a length)
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How to improve code finding x+y+z+w=40 to generate numbers 1 through 40?
Edit: Appended work to find generators for any number as per azerbajdzan and ubpdqn. See below
Ran into this problem and was wondering if there is a more elegant and concise way of coding this if ...
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Why doesn't `FindInstance` work in finding Heronian triangle?
I was trying to find a triangle whose side lengths are all positive integers and area is rational number (similar to Heronian triangle) with FindInstance, but it ...
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FindInstance for Reals
I am trying to find the total number of solutions to: Floor[x]*Ceiling[x]=x^2 between 0 and 100
Now when we do this for Integers, it's just fine with a 100 result:
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Why FindInstance does not find this solution?
Do you think FindInstance should have found this solution?
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Checking Positivity
This is my matrix:
H = {{2*a1*p4, -p5*a2, p3*a1, 0},{-p5*a2, 2*a2*w1, -p2, -p1},{p3*a1, -p2, 2*a3*w2, 0},{0, -p1*a4, 0, 2*a4*w3}}
Where a1,a2,a3,a4 are non-...
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Wrong solution in a geometry problem
I try to solve the simple problem of finding (integer numbers) for the sides of a triangle when its perimeter is 90 and its area is twice, three times or four times this number. My approach is this:
<...
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How to return only the negative complex solutions of DSolve or using FindInstance?
I am using DSolve to find the solutions to two differential equations. The problem is from the first solution, I only want the solution that includes a negative ...
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Problem in solving the non-linear equation
Is there any other way to solve an equation rather than solve command also without findroot command in Mathematica? Because the Solve command is not returning any ...
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How can I formulate this simple mathematical riddle into a computable Wolfram Language query?
I'm trying to formulate the below question into a computable wolfram language solution, but can't seem to get it right.
Question:
Place three piles of matches on a table, one with 11 matches, the ...
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How can I reduce the time to compile this solve?
I want to find five integer numbers $a, b, c, d, e$ so that $a+ b+ c + d + e = 9 k$ and none of two number in which are equal. I tried.
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How can we find the appropriate values of unknowns such that the following expression must be a real number? `FindInstance`
Question: I have some mathematical functions including various parameters. I want to find instances for the parameters such that the function must be in a real domain after substituting the values of ...
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Finding only non-negative roots with FindRoot
Given an arbitrary function F, how do I force FindRoot to look only for non-negative roots, returning nothing otherwise?
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