I am having a problem in solving a coursera assignment can you please help me

The problem is as such: variable input function

Function called should take two arguments age and year,The function must return true if age is less than the limit. If limit is not mentioned it must have default as 21.Output argument name is too_young.

I have wrote a code can you please verify it,

function too_young=under_age(age,limit) 
if nargin<2
   limit=18; 
end
if limit<18
    too_young=true;
else
    too_young=false;
end

Function call is as such:
too_young = under_age(18,18)
too_young = under_age(20)


I got the errors as such:
 correct for 18 vs 18
 Assessment result: incorrect20
Variable too_young has an incorrect value.

 Assessment result: correct22
 
 Assessment result: incorrect17 vs 18
Variable too_young has an incorrect value.

 Assessment result: incorrect13 vs 12
Variable too_young has an incorrect value.

 Assessment result: incorrectRandom tests
Variable too_young has an incorrect value.
under_age(21, 23) failed ...

Answer 1

[Geoff Hayes]

Nikhil - Iook closely at this code

if limit<18
    too_young=true;
else
    too_young=false;
end

Why isn't age being used? What happens if the user has passed in a valid limit and now you are ignoring it by using 18? Try using the MATLAB debugger to step through the code and understand why the condition for your if statement is incorrect.

[Nikhil A]

Thanks for the reply. I got it and by using age in the program.

Answer 2

[HARSHA VARDHAN]

function too_young=under_age(age,limit)
if nargin<2
    limit=21;
end
if age<limit
    too_young=true;
elseif age>=limit
    too_young=false;

end

Answer 3

[Nourhan]

Write a function called minimax that takes M, a matrix input argument and returns mmr, a row vector containing the absolute values of the difference between the maximum and minimum valued elements in each row. As a second output argument called mmm, it provides the difference between the maximum and minimum element in the entire matrix. See the code below for an example:

>> A = randi(100,3,4)
A =
    66    94    75    18
     4    68    40    71
    85    76    66     4
>> [x, y] = minimax(A)
x =
    76    67    81
y =
    90
    [mmr, mmm] = minimax([1:4;5:8;9:12])