Scilab fundamentals 15 - Symbolic functions

    The symbolic functions listed in Table 1 provide the capability of processing symbols and return the calculation results in the form of symbols. With symbolic functions, we can handle and describe arithmetic by symbols in Scilab environment. In other worlds, we can process strings mathematically instead of numbers.

Scilab fundamentals 14 - Strings part 2

    Scilab is capable of processing strings such as combination, conversion, and separation. These functions listed in Table 1 that are useful in programming. The functions including ascii, strtod, and strcmp, were introduced in the previous section. This asection addresses on the rest functions.

Scilab fundamentals 13 - Strings part 1

    Scilab is capable of processing strings such as combination, conversion, and separation. The following two sections will introduce several functions listed in Table 1 that are useful in programming.

 

Scilab fundamentals 11 - The select statement

    I have a dream (but I’m not Obama). Someday, a beauty asks me: coffee, tea, or me? When this dream comes true, I have three choices, and I know how to select the best one. Now we learn how to program my dream by the select statement.

In the above example, the variable n is defined as my selection. Consequently, the select statement responses the answer with respect to the value of n.

Scilab fundamentals 10 - The for statement

    The persons who prefer bodybuilding know the meaning of repetition. For example, I do bench press for 7 repetitions. We can organize this example systematically as the following statement.

 



Scilab fundamentals 9 - The while statement

    The if statement was introduced in the previoussection. In this section, we’ll learn another statement, the while statement. Let’s start from an example. While Lisa went to work, her baby cried. This description implies that her baby had cried until Lisa came back. Combining these two sentences, we got the following statement.

 

Scilab fundamentals 8 - The if statement

    It supposes that most persons ever heard that– If you really love me, you are willing to do everything for me. It’s very romantic, if this statement holds. In other words, if the statement holds, I will do everything for you, or I won’t do anything for you. Now, we reorganize the preceding description as the following statement.

Scilab fundamentals 7 - Special matrix functions

    Scilab provides several special functions for users to generate special matrices. These functions are listed below.

 

Scilab fundamentals 6 - Other matrix operations

We have learned the methods to create matrices and the elementary operations in previous two sections (Scilab fundamentals 4 and 5). The other common matrix operations are introduced in this section.

Scilab fundamentals 5 - Elementary matrix operations

²  Matrix arithmetic: addition, subtraction, multiplication, and backslash

    The common operators including +, -, and*, applied on real numbers are also available with real matrices. The operator, named backslash or left division, calculate the solution of A^-1B which represented as A\B. These matrix arithmetic operators are performed on matrix to matrix operation, and the operation rules are defined by linear algebra. Therefore, the dimensions of matrices must be the same for additions of matrices, i.e., two m×n matrices or two square matrices. For multiplication, A is a m-by-n matrix and B is a n-by-m matrix. As for backslash, A is a m-by-m matrix, and B is a m-by-n matrix.