1MEMS4 - Week 1: Matlab Basics

Which of the following will create a vector with the numbers 1,2,3(select all that are correct):

• myVector=[1,2,3];

• myVector(1,2,3)=[1,2,3];

• myVector=[1 2 3];

Considering the vector myVector=[1,2,3],

which statement will multiply the last number by 6 (select all that are correct):

• myVector(:)=myVector(:)*6

• myVector(1,3)=myVector(1,3)*6

• myVector(:,3)=myVector(:,3)*6

Considering the vector myVector=[1,2,3],

which statement will divide all the numbers by 2 (select all that are correct):

• myVector=myVector/2

• myVector(:)=myVector(:)/2

• myVector=myVector./2

Which statements will create a 3x3 matrix filled with 1s (select all that are correct):

• myMatrix(3,3)=1

• myMatrix=ones(3);

• myMatrix=[1,1,1,1,1,1]

• myMatrix=[1,1,1;1,1,1;1,1,1]

Considering the matrix myMatrix=[1,1,1;1,1,1],

which statement will multiply the element in the 1st row, 3rd column by 2:

• myMatrix(3,1)=myMatrix(3,1)*2;

• myMatrix=myMatrix(1,3)*2;

• myMatrix(:)=myMatrix(:)*2;

• myMatrix(1,3)=myMatrix(1,3)*2;

Which statements will create a 3x3 matrix filled with 1s (select all that are correct):

• myMatrix(3,3)=1

• myMatrix=ones(3);

• myMatrix=[1,1,1,1,1,1]

• myMatrix=[1,1,1;1,1,1;1,1,1]