Computer Lecture-1

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MATLAB System Environment
Arithmetic Operations in MATLAB
1. + : is used for addition of two numbers or two matrices.
2. - : is used for subtraction of two numbers or two matrices.
3. * : is used for multiplication of two numbers or two matrices.
4. / or \ : is used for division of two numbers or two matrices. Ex. 7/70=7, 7\70=0.1. (why?)
5. ^ : is used to raise a value to a certain exponent. Ex.: 2^10=100.
6. sqrt : is used for finding the square root for any number. EX.: sqrt(100)=10.
7. % : for writing comments on command window or in m-file.
8. .* : for element by element matrix multiplication.
9. ./ or .\ : for element by element matrix division.
10. .^ : for raising the elements of a matrix to a certain exponent.
11. … : used for continuing writing the expression located in the current line in the next line.
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