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Question: What is MATLAB?
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Answer: Answer: The word MATLAB stands for "Matrix Laboratory".
It is a high-level programming language and interactive
environment primarily used for numerical computation, visualization, and programming.
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Question: Can you explain the difference between a script and a function in MATLAB?
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Answer: A script is a file containing a sequence of MATLAB commands that are executed sequentially.
And a function is a MATLAB program that performs a specific task and can accept inputs and produce outputs.
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Question: What is the significance of the "dot" notation in MATLAB operations?
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Answer: The dot notation in MATLAB is used for element-wise operations rather than matrix operations.
For example, .* is used for element-wise multiplication, ./ for element-wise division, etc.
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Question: How can you create a vector of evenly spaced numbers in MATLAB?
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Answer: One can use the 'linspace' function to create a vector of evenly spaced numbers.
For example, 'linspace(start, end, n)' generates n equally spaced points between 'start' and 'end'.
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Question: What is the difference between 'plot' and 'scatter' functions in MATLAB?
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Answer: Below one can find the comparison:
• The 'plot' function is used to create line plots.
• But the 'scatter' function is used to create scatter plots.
• In a scatter plot, each data point is represented individually with a marker.
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Question: Can one explain the purpose of the 'imshow' function in MATLAB?
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Answer: The 'imshow' function is used to display images in MATLAB.
It is commonly used for visualizing images stored as matrices.
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Question: How can you read data from a text file in MATLAB?
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Answer: You can use the 'importdata' function to read data from a text file into MATLAB.
Alternatively, you can use functions like 'textscan', 'fscanf', or 'readtable' depending on the format of the data.
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Question: What is the purpose of the 'meshgrid' function in MATLAB?
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Answer: The 'meshgrid' function is used to create grids of coordinates for 3D plots.
It generates matrices X and Y such that [X, Y] = meshgrid(x, y) creates 2D grids from vectors x and y.
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Question: How can you handle missing or invalid data in MATLAB?
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Answer: MATLAB provides functions like isnan to 'detect NaN' (Not-a-Number) values and
'isinf' to detect infinite values.
Also one can use logical indexing or functions like isnan to filter out or replace missing or invalid data.
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