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Welcome to the MATLAB Basics MCQs Page

Dive deep into the fascinating world of MATLAB Basics with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of MATLAB Basics, a crucial aspect of MATLAB. In this section, you will encounter a diverse range of MCQs that cover various aspects of MATLAB Basics, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within MATLAB.

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Check out the MCQs below to embark on an enriching journey through MATLAB Basics. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MATLAB.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of MATLAB Basics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

MATLAB Basics MCQs | Page 10 of 17

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Q91.
A student has to find the solution of an equation cos(x)=1/2. She has to write the program such that exact values are shown at output. Which of the following codes would help her?

a.

syms x;eqn = cos(x) == 1/2;vpa( solve(eqn,x))

b.

syms x;eqn = cos(x) == 1/2;solve(eqn,x)

c.

vpa(solve(β€˜cos(x)=1/2’))

d.

syms x;eqn = cos(x) = 1/2;vpa(solve(eqn,x))

Discuss
Answer: (c).vpa(solve(β€˜cos(x)=1/2’))
Q92.
Find the error in the following code? 
Predicted output: (b + (b² - 4*a*c)(½))/(2*a)
     (b - (b² - 4*a*c)(½))/(2*a)
Code: solve (b*x² + c*x + a == 0)
Present output: -(c + (c² - 4*a*b)(½))/(2*b)
   -(c - (c² - 4*a*b)(½))/(2*b)

a.

Predicted output is same as present output after math magic

b.

solve(a*x² + b*x + c == 0)

c.

vpa(solve(a*x² – b*x + c == 0))

d.

solve(a*x² – b*x + c == 0)

Discuss
Answer: (d).solve(a*x² – b*x + c == 0)
Q93.
Which program can help to solve the following differential equation? 
dy/dx=b*y     y(0)=5;

a.

syms y(t) a;equn = diff(y,t)==b*y;cnd=y(0)==5;ySol(t)=dsolve(equn,cnd)

b.

syms y(t) a;eqn = diff(y,t) == a*y;ySol(t) = dsolve(eqn,(y(0)=5);

c.

syms y(t) a;eqn=diff(y,t)=a*y;cond=y(0)==5 sol(t)=dsolve(eqn,cond);

d.

sym y(t) a; eqn=diff(y,t)==a*y;cond=y(0)==5;sol(eqn,cond);

Discuss
Answer: (a).syms y(t) a;equn = diff(y,t)==b*y;cnd=y(0)==5;ySol(t)=dsolve(equn,cnd)
Q94.
What happens if dsolve does not return any numerical solution?

a.

The equations have no solution

b.

The equations have a trivial solution

c.

The equations have infinite no. of solutions

d.

The equation has to be solve separately

Discuss
Answer: (d).The equation has to be solve separately
Q95.
If solve does not return any solution, what does it imply?

a.

The equation has no definite solution

b.

The equation has a solution for a specific interval

c.

The equation may be solvable but the function β€˜solve’ cannot produce a solution

d.

There is no function β€˜solve’

Discuss
Answer: (c).The equation may be solvable but the function β€˜solve’ cannot produce a solution
Q96.
Vectors depend upon brackets while scalars don’t.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q97.
How many errors will MATLAB show if the following code entered? 
A=[1;2;3]; B=[1 2]; C=A.*B;D=C*A;

a.

2

b.

1

c.

No error

d.

4

Discuss
Answer: (b).1
Q98.
To see the sub-matrix with aα΅’β±Ό for 2<=i<=4 and 1<=j<=2 of a matrix a, of order 5*6, which code is used?

a.

a(2;4,1;2)

b.

a(2,4:1,2)

c.

a(2:4,1:2)

d.

a(2,4;1,2)

Discuss
Answer: (c).a(2:4,1:2)
Q99.
Which code shows the use of ellipsis in MATLAB?

a.


A = [1 2 3;...
5 6 7]

b.

A = [1;2’3]

c.


A = [1;2..
3;4]

d.

A = [1:2..:2]

Discuss
Answer: (a).
A = [1 2 3;...
5 6 7]
Q100.
What is the symbol used to evaluate the transpose of a vector?

a.

β€œ ^ ”

b.

β€œ * ”

c.

β€œ β€˜ ”

d.

β€œ ~ ”

Discuss
Answer: (c).β€œ β€˜ ”
Page 10 of 17

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