write a function called tri_area returns the area of a triangle with base b and height h

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hello this is my function code and command window code and there is a message of invalid expression at line 2 and i dont know what is the wrong can anyone help me
function [area] = tri_area([b,h]);
%command window
area = tri_area[3,2])
  16 件のコメント
Noor Fatima
Noor Fatima 2023 年 2 月 5 日
Thanku Walter roberson



Torsten 2020 年 4 月 9 日
編集済み: darova 2020 年 4 月 9 日
function area = tri_area(b,h)
area = 0.5*b*h;
From the command window
A = tri_area(3,2)
  21 件のコメント
Walter Roberson
Walter Roberson 2022 年 12 月 26 日
When you use the debugger and format long g then what are some sample inputs, and what is the calculated output, and what does the grading program say that the output should be?


その他の回答 (3 件)

Imane Tahar
Imane Tahar 2020 年 11 月 19 日
function area = tri_area(b,h)
area = (b*h)/2

Siya Desai
Siya Desai 2021 年 4 月 4 日
編集済み: Siya Desai 2021 年 4 月 4 日
function [area] = tri_area (b,h)
tri_area = (0.5)*(b)*(h)
code to call your function
tri_area(2,3) %any random input
  1 件のコメント
Walter Roberson
Walter Roberson 2021 年 4 月 4 日
result = tri_area(2,3) %any random input
tri_area = 3
Output argument "area" (and maybe others) not assigned during call to "solution>tri_area".
function [area] = tri_area (b,h)
tri_area = (0.5)*(b)*(h)


Pelden Chodon
Pelden Chodon 2021 年 5 月 27 日
function [area, tri_area] = tri_area(b,h) ;
area = (0.5)*(b)*(h);
v = area(:);
tri_area = sum(v);
% Test that your function runs as expected before pressing Submit
[area, tri_area] = tri_area(2,3)
  1 件のコメント
DGM 2023 年 2 月 4 日
You're declaring a variable with the same name as the function you're calling. This will either throw an error or silently cause other errors, depending on where you put the function.
For scalar inputs, summing area serves no purpose. For nonscalar inputs, the results are either wrong, or will throw an error.
% summing a scalar accomplishes nothing
[allareas totalarea] = tri_area(2,3)
allareas = 3
totalarea = 3
% some nonscalar inputs return the wrong results
[allareas totalarea] = tri_area([2 2; 2 2],[3 3; 3 3])
allareas = 2×2
6 6 6 6
totalarea = 24
% some nonscalar inputs return the wrong number of wrong results
[allareas totalarea] = tri_area([2 2],[3;3])
allareas = 6
totalarea = 6
% some nonscalar inputs fail completely
[allareas totalarea] = tri_area([2 2],[3 3])
Error using *
Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To operate on each element of the matrix
individually, use TIMES (.*) for elementwise multiplication.

Error in solution>tri_area (line 10)
allareas = (0.5)*(b)*(h); % these parentheses serve no purpose
function [allareas, totalarea] = tri_area(b,h)
allareas = (0.5)*(b)*(h); % these parentheses don't do anything
v = allareas(:);
totalarea = sum(v);
As this is all largely copy-pasted from other bad answers posted above, I should point out that much of these problems were already openly explained before you posted this. See also: function, array vs matrix operations



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