Practice Mathematical Functions (2.1) - Tutorial lessons - Part A

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6 sample questions

Question 1.
What is the MATLAB command to find the cosine of an angle?
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Recall the word 'cosine' in trigonometric functions.
Question 2.
Which function would you use to find the square root of a number in MATLAB?
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Think of the 'sqrt' abbreviation standing for 'square root'.
3Question 3.
What command computes the sine of an angle in MATLAB?
- sin(x)
- sine(x)
- cos(x)
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Think of the abbreviation for sine.
4Question 4.
True or False: log(x) and log10(x) produce the same results.
- True
- False
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Recall the definitions of logarithms.
Question 5.
Calculate and compare the sin(x) and cos(x) values for x = π/4 and discuss their significance.
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Refer to the unit circle and properties of 45-degree angles.
Question 6.
Create a MATLAB script to plot exp(x) for x ranging from -1 to 1 and annotate the graph with titles and labels.
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Remember to define the range and use the appropriate plotting functions.

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