Function can't see variable
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Question 1
Write a function-file can be used to calculate
equivalent resistance of n parallel connected resistor
function Req = equiv_parallel(r)
%r is an input of length n
%req is an output
%usage req= equiv_parallel(r)
%resistances' values
% for example r=[1 2 3 4 5]
r = [1 2 3 4 5]; %resistances' values
n = length(r); %number of resistor
Req = 1/sum(1./r); %sum of all parallel resistor
end
when I'm trying to run this code write as equiv_parallel(r) , matlab gives me "Undefined function or variable 'r'."
采纳的回答
You're probably just clicking the green run triangle without passing in anything for r. Try assigning r first and then calling the function. And DON'T clobber the passed-in r by reassigning it to that vector [1,2,3,4,5]!
%r is an input of length n
%req is an output
%usage req= equiv_parallel(r)
%resistances' values
% for example r=[1 2 3 4 5]
r = [1 2 3 4 5]; %resistances' values
% Now call the function
Req = equiv_parallel(r)
function Req = equiv_parallel(r)
n = length(r); %number of resistor
Req = 1./sum(1./r); %sum of all parallel resistor
end
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