Question 1 : How would you express a pi as a character and an integer? Choose the correct code.
1. a=pi;b='pi';
2. a=22/7; b=pi;
3. a=3.1415; b=22/7;
4. a=3.1429;b='pi';
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Question 2 : 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?
1. syms x;eqn = cos(x) == 1/2;vpa( solve(eqn,x))
2. syms x;eqn = cos(x) == 1/2;solve(eqn,x)
3. vpa(solve('cos(x)=1/2'))
4. syms x;eqn = cos(x) = 1/2;vpa(solve(eqn,x))
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Question 3 : Which function is preferable to find the magnitude of a complex number?
1. abs()
2. sqrt()
3. cart2pol()
4. MATLAB does not support complex arguments
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Question 4 : Conversion Function int16 uses_________ range of value?
1. -2⁷ to 2⁷-1
2. -2¹⁵ to 2¹⁵-1
3. -2³¹ to 2³¹-1
4. 0 to 2¹⁶-1
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Question 5 : What happens if dsolve does not return any numerical solution?
1. The equations have no solution
2. The equations have a trivial solution
3. The equations have infinite no. of solutions
4. The equation has to be solve separately
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Question 6 : If a./b=(b./
1. ^T, what can be concluded about the matrices a and b?a) a = b^T
2. a = b^-1
3. a = b'
4. nothing special
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Question 7 : What is the difference between hold on and hold all?
1. no difference
2. hold all holds every plot while hold on holds a specific plot in the chain of argument
3. hold all does not exist
4. hold on is syntactically incorrect
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Question 8 : The solve[] command can do which of the following things?
1. Produce the exact solution
2. Produce a symbolic solution
3. Produces exact roots
4. Produces complex roots
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Question 9 : What is the difference between stem plot and histogram plot?
1. No difference
2. Histogram does not have negative values while stem may have negative values
3. Histogram cannot relate 3 variable while stem can
4. Histogram cannot be created in MATLAB
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Question 10 : To see the sub-matrix with a_ij for 2<=i<=4 and 1<=j<=2 of a matrix a, of order 5*6, which code is used?
1. a(2;4,1;2)
2. a(2,4:1,2)
3. a(2:4,1:2)
4. a(2,4;1,2)
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