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Example of Menu driven modular program:
As an illustration of such a menu-driven program, we will write a program to discover the constant e.
The constant e, known as the natural exponential base, is used broadly in mathematics & engineering. There are many diverse applications of this constant. The value of the constant e is around 2.1718. Raising e to the power of x, or ex, is so general that this is known as the exponential function. In MATLAB, we have seen that, there is a function for above, exp.
The one way to determine the value of e is by finding a limit.
Since the value of n increases on the way to infinity, the outcome of this expression approaches the value of e.
The approximation for an exponential function can be found by using what is known as the Maclaurin series:
IS Functions for Strings: There are many functions for strings, that return logical true or false. The function isletter returns the logical true when the character is a lette
Interpolation and extrapolation: In most cases, it is desired to estimate values other than at the sampled data points. For illustration, we may want to estimate what the temp
Function iscellstr - string function: The function iscellstr will return the logical true when a cell array is a cell array of all the strings, or logical false if not. >>
Removing Whitespace Characters: The MATLAB has functions which will eliminate trailing blanks from the end of a string and/or leading blanks from the starting of a string.
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Dot Product: The dot or inner product of two vectors a and b is written as a • b and is defined as In another words, this is like matrix multiplication when multiplyi
Replacing a string - function strrep: The function strrep finds all the occurrences of a substring within the string, and substitutes them with a new substring. The order of a
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Help command: The help command is used with the script rectarea, the function readlenwid, and the major function printrectarea. To see the first comment in the subfunction, as
Expanding a function: The expand function will multiply out terms, and factor will do the opposite: >> expand((x+2)*(x-1)) ans = x^2 x-2 >> factor(ans)
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