How can I ask Matlab to adjust a parameter in an equation until the answer becomes equal with a predetermined input value?
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I am trying to compare two heights, a trial and calculated. The trial height of the object is an input to the program, while the program calculates the actual height but I want matlab to compare the both heights by adjusting a parameter in the height equation until both heights become equal. Then, matlab prints the final value of the parameter adjusted in the height equation. Please, can anybody help as I am a novice with very weak programming skills? Thank you.
I don't have any working code as I am still learning from this community hub.
Lewis is my name, a student
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HWIK
2021-11-25
You might want to try and detail your question a bit further. Like, how does the "program" calculate the actual height?
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Stephen23
2021-11-25
编辑:Stephen23
2021-11-25
Define a simple anonymous function with one input which calculates the difference between your two heights, and supply that function as the first input to FZERO. FZERO will adjust that input until the output (i.e. difference) is zero, exactly as you request.
V = 23;
ht = 5;
fh = @(A) ht - V./A;
A = fzero(fh,[0.2,100])
V./A
4 个评论
Stephen23
2021-11-25
编辑:Stephen23
2021-11-25
"I have tried using different inputs for ht and observed, the program only works for one particular value of ht."
It works for me. Lets try it:
V = 23;
ht = 6; % different height value!!!
fh = @(A) ht - V./A;
A = fzero(fh,[0.2,100]) % gives a different area!!!
V./A % checking: gives the input height.
Everything seems to be working as expected.
As you did not show the code you tried I have no idea what you did wrong.
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HWIK
2021-11-25
I'm not sure I quite understand the description but here is my go at it:
function Actual_area = call_it_what_you_want(V,ht,Areas)
[~,idx] = min(abs(ht-V./Areas));
Actual_area = Areas(idx);
end
This will take the value of A that gives the closest height to the value of ht
1 个评论
Stephen23
2021-11-25
Lewis Tamuno-Ibuomi's incorrectly posted "Answer" moved here:
Thank you Oliver. Did you try any demonstration to test the codes? I would not mind a rough demonstration. Thanks.
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