1st Matlab MCQ

For each question, click on the correct solutions(s). One or more propositions can be correct.

mandatory answer

Question 1

Enter your name :

Question 2

Which proposition(s) create(s) an array (i.e. matrix)?

A={0 1 2};

A=[1 2; 3];

A=[ ];

A=new array();

Question 3

Which proposition(s) is(are) correct (i.e. syntactically legal) to begin a loop ?

for(I=1; I<10; I++)

for I=1:10

for I=10:-1:1

for I=1 to 10

Question 4

A is a cell. What does A{1,2} refer to, relatively to A ?

value of A at 1st row, 2nd column

value of A at 2nd row, 3rd column

element of A (not its value) at 1st row, 2nd column

element of A (not its value) at 2nd row, 3rd column

Question 5

What does the following do ?
a = 2;
b = 3;
c = a+i*b;

it creates variable c and assign value '2+3i' to it

it creates variable c and assign value 'a+i*b' to it (a and b undefined)

it creates variable c and assign value '2' to it

it provokes an error

Question 6

What does the following produce/create ?
5:-1:0

an error

an array

a cell

a loop

Question 7

A and B are 2 square matrices. What does A*B produce/do ?

element by element product

matrices product

an error

Question 8

How to concatenate 2 character arrays (e.g. A and B) ?
A= 'str1';
B= 'str2';

C = A+B;

C = horzcat(A,B);

C = [A,B]

Question 10

'u' is an array of numbers and umax is a number. What does this produce : (u>umax).*umax

nothing or a syntax error because a comparison can't be multiplied by a value (this has no meaning)

an overflow

a new array for which each value superior to umax is equal to umax and others are 0

a new array for which each value superior to umax is equal to umax and others remain unchanged

a new array for which each value inferior to umax is equal to umax and others are 0

a new array for which each value inferior to umax is equal to umax and others remain unchanged

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1st Matlab MCQ

Enter your name :

Which proposition(s) create(s) an array (i.e. matrix)?

Which proposition(s) is(are) correct (i.e. syntactically legal) to begin a loop ?

A is a cell. What does A{1,2} refer to, relatively to A ?

What does the following do ?
a = 2;
b = 3;
c = a+i*b;

What does the following produce/create ?
5:-1:0

A and B are 2 square matrices. What does A*B produce/do ?

How to concatenate 2 character arrays (e.g. A and B) ?
A= 'str1';
B= 'str2';

A for loop is ended (enclosed) by ?

'u' is an array of numbers and umax is a number. What does this produce : (u>umax).*umax

Which functions can you use to plot a 2-dimensional curve ?
(avoid plots dedicated to plot 3D curves)

1st Matlab MCQ

Enter your name :

Which proposition(s) create(s) an array (i.e. matrix)?

Which proposition(s) is(are) correct (i.e. syntactically legal) to begin a loop ?

A is a cell. What does A{1,2} refer to, relatively to A ?

What does the following do ?a = 2;b = 3;c = a+i*b;

What does the following produce/create ?5:-1:0

A and B are 2 square matrices. What does A*B produce/do ?

How to concatenate 2 character arrays (e.g. A and B) ?A= 'str1';B= 'str2';

A for loop is ended (enclosed) by ?

'u' is an array of numbers and umax is a number. What does this produce : (u>umax).*umax

Which functions can you use to plot a 2-dimensional curve ?(avoid plots dedicated to plot 3D curves)

What does the following do ?
a = 2;
b = 3;
c = a+i*b;

What does the following produce/create ?
5:-1:0

How to concatenate 2 character arrays (e.g. A and B) ?
A= 'str1';
B= 'str2';

Which functions can you use to plot a 2-dimensional curve ?
(avoid plots dedicated to plot 3D curves)