MATLAB: Creating a function

functionmatlab function

I have spent the last hour researching and am still having problems trying to create a simple function. It says things like "Undefined function or variable 't' or "not enough input arguments'. All I want to do is create a function: Height(t) that can find the values when the height is 0 based on it's equation, so this is what I did:

function h = Height(t)
h = 2.13*t.^2-0.0013*t.^4+0.000034*t.^4.751;
end

Why does this show an error? And what command can I use to find when h = 0?

Thanks

Best Answer

h=0 when t=0 ; your function does not have other zeros.

Best wishes

Torsten.

Related Solutions

MATLAB: How to add equation to function

Note: the following can be done trivially without a loop by vectorisation.

t = 0:2:100;
h=zeros(size(t));
for k=1:numel(t);
    h(k) = rocket(t(k))
    if h(k)>=0
       disp(h(k));      
    end 
end
function h = rocket(t)
         h = (60+(2.13*(t^2))-(0.0013*(t^4))+(0.000034*(t^4.751)));
end

Without loop:

t = 0:2:100;
h = rocket(t); 
fprintf('h >= 0:%f\n',h(h>=0))
function h = rocket(t) 
         h = (60+(2.13*(t.^2))-(0.0013*(t.^4))+(0.000034*(t.^4.751)));
end

MATLAB: Code not working

[max_height,idx]=max(height);
     %      ^^^---- gives the index , you were rying to index with value instead of true index
time_max_height=t(idx)

Best Answer

Related Solutions

MATLAB: How to add equation to function

MATLAB: Code not working

Related Question