Explore topic-wise MCQs in Matlab.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Matlab knowledge and support exam preparation. Choose a topic below to get started.

1.

The function to evaluate the value of a polynomial,l for a constant value of the independent variable(say a) in the polynomial is ______

A. poly(p,a), p is a row vector
B. polyder(p)
C. polyint(p)
D. polyval(c,a), c is a row vector
Answer» E.
Discussion
2.

What happens if we don t assign a variable to an expression which evaluates a numerical value?

A. MATLAB shows error
B. Nothing happens
C. The evaluated values are assigned to a variable ans automatically
D. Depends on the numerical value
Answer» D. Depends on the numerical value
Discussion
3.

How would you simplify log(x20) log(x13) log(x7) in MATLAB? (Assume x is defined as a string variable)

A. simplify(log(x<sup>20</sup>)-log(x<sup>13</sup>) log(x<sup>7</sup>));
B. log(x<sup>20</sup>) log(x<sup>13</sup>) log(x<sup>7</sup>)
C. simplify(log(x<sup>20</sup>)-log(x<sup>13</sup>) log(x<sup>7</sup>), IgnoreAnalyticConstraints ,true)
D. simplify(log(x<sup>20</sup>)-log(x<sup>13</sup>) log(x<sup>7</sup>))
Answer» D. simplify(log(x<sup>20</sup>)-log(x<sup>13</sup>) log(x<sup>7</sup>))
Discussion
4.

In the function vpa( 981 ,10), why do we put 981 within inverted commas?

A. We can choose to not put the value within a pair of single inverted comma
B. We do it so that we don t get an approximated value
C. We do it to get the exact value as MATLAB computes exact values, of numerical expressions, when declared within a string
D. We do it to get a floating-point approximated value, approximated to 14 digits
Answer» D. We do it to get a floating-point approximated value, approximated to 14 digits
Discussion
5.

What is the difference between syms x and sym x ?

A. there is no difference, they are the same functions
B. they are equivalent
C. syms x makes the declaration long lasting while sym x makes the declaration short lasting
D. syms x makes the symbol short lasting while sym x makes the declaration long lasting
Answer» D. syms x makes the symbol short lasting while sym x makes the declaration long lasting
Discussion