PS11.3 Without actually using MATLAB answer the following questions. You just ne

Question

PS11.3 Without actually using MATLAB answer the following questions. You just need to circle the correct letter. Ambiguous responses receive zero credit. Let >>represent the command prompt a. What is the displayed result of executing the following script?: >> X= [2:4; -1:1; 1 2 3]; Y-X(2, :) ; size (Y') A: >> 2 2 B: 3 1 C>2 1 D: 13E: None of the others b. What is the value for y after the while loop ends in the following script file in MATLAB? x =0 :10; -false; y i =1; while x(1)

Explanation / Answer

Matlab Script:

X= [2:4;-1:1;1 2 3];
Y = X(2,:);%return second row which is of dimension 1 by 3
size(Y') %returns size or dimension of transpose of Y which is 3 by 1 answer is B

x = 0:10;
y = false;
i=1;
%below loop runs for 10 times and for every even number of iterations y will be false and for every odd number of iterations y is true
while x(i)<10
i=i+1;
y = ~y;
end
%option D is correct

x = zeros(10,1);
for j=1:5
x(2*j) = 1;%inserting 1's in even indices
end
y = zeros(10,1);
for j=0:4
y(2*j+1)=1;%inserting 0's in odd indices
end

z = x+y;%contains all 1's option B
w = x.*y;%element by element multiplication which will be all zeros option B
v = y'*x;%normal matrix multiplication which gives 0 a scalar

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