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For Loops which do not use an iterator Variable in the action:
In all the illustrations that we seen so far, the value of the loop variable has been used in same way in the action of the for loop:
We have printed the value of i, or added it to a sum, or multiplied it by the running product, or used it as an index into the vector. It is not always essential to really use the value of the loop variable, though. At times the variable is easily used to iterate, or repeat a statement at specified number of times. For e.g.,
for i = 1:3
fprintf('I will not chew gum\n')
end
Generates the output:
I will not chew gum
The variable i is compulsory to repeat the action three times, even though the value of i is not used in the action of the loop.
ischar function: The ischar function return the logical true if an array is a character array, or logical false if not. >> vec = 'EK127'; >> ischar(vec) ans =
Illustration of Matrix solutions: For illustration, consider the three equations below with 3unknowns x 1 ,x 2 , and x 3 : We can write this in the form Ax = b here A
Evaluating a string: The function eval is used to compute a string as a function. For illustration, below is the string 'plot(x)'is interpreted to be a call to plot the functi
Displaying expressions: The good-looking function will show such expressions by using exponents; for illustration, >> b = sym('x^2') b = x^2 >> pretty(b)
Function strncmp: The function strncmp compares only the first n characters in the strings and ignores the rest. The initial two arguments are strings to compare, and third ar
Basic mathematical operations: All the basic mathematical operations can be executed on symbolic expressions and variables (example, add, raise to a power, multiply, subtract,
Interchange rows : for illustration interchanging rows ri and rj is written as
Simplification Functions: There are numerous functions which work with expressions, and simplify the terms. Not all the expressions can be simplified, but the simplify functio
Matrix definitions: As we know the matrix can be thought of as a table of values in which there are both rows and columns. The most common form of a matrix A (that is sometime
Matrix operations: There are some common operations on matrices. The operators which are applied term by term, implying that the matrices should be of similar size, sometimes
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