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Download e-book for iPad: Contemporary Communication Systems Using MATLAB (PWS by John G. Proakis Masoud Salehi

By John G. Proakis Masoud Salehi

ISBN-10: 0534938043

ISBN-13: 9780534938048

This publication has been built as a complement to conventional center texts in communique structures for teachers and scholars who desire to make MATLAB an essential component in their examine of verbal exchange structures themes and ideas. The books during this new sequence are designed to advertise scholars' challenge fixing and significant considering abilities by using MATLAB as a "virtual laboratory." A 3.5" disk containing helping MATLAB info documents is sure into the e-book. This ebook bargains quite a few MATLAB-based simulations and examples of communications platforms, whereas supplying a solid stability of thought and hands-on machine event. The insurance of concept isn't intended to exchange that supplied in a conventional center textual content, yet does identify a conceptual history to counterpoint scholars' MATLAB actions.

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Download e-book for iPad: Contemporary Communication Systems Using MATLAB (PWS by John G. Proakis Masoud Salehi

This booklet has been constructed as a complement to standard center texts in conversation platforms for teachers and scholars who desire to make MATLAB an essential component in their learn of verbal exchange platforms themes and ideas. The books during this new sequence are designed to advertise scholars' challenge fixing and important considering abilities by utilizing MATLAB as a "virtual laboratory.

Read e-book online Discovering Mathematics with Maple: An interactive PDF

His publication grew out of the desire to permit scholars of econometrics get familiar T with the strong innovations of machine algebra at an early level of their curriculum. As no textbook to be had on the time met our standards as to content material and presentation, we had no different selection than to put in writing our personal path fabric.

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The readline command reads the input as a string, and the parse command converts the string to an expression. The string must represent a complete expression. > s := "a*x^2 + 1"; s := “a*x^2 + 1” > y := parse( s ); y := a x2 + 1 When you parse the string s you get an expression. In this case, you get a sum. 5 Extending Maple • 31 The parse command does not evaluate the expression it returns. You must use eval to evaluate the expression explicitly. In the following output, the variable a is not evaluted to its value, 2, until you explicitly use the eval command.

When you have defined the variable ‘type/name ‘, you can use name as a type. > ‘type/Variables‘ := {name, list(name), set(name)}: > type( x, Variables ); true > type( { x[1], x[2] }, Variables ); true If the structured type mechanism is not powerful enough, you can define a new type by assigning a procedure to a variable of the form ‘type/name ‘. When you test whether an expression is of type name, Maple invokes the procedure ‘type/name ‘ on the expression if such a procedure exists. The procedure should return true or false.

The readstat command reads one expression from the keyboard. readstat( prompt ) The prompt is an optional string. > readstat("Enter degree: "); Enter degree: n-1; n−1 The user input for a readstat command must have a terminating semicolon or colon, or an error is raised. Advantages Unlike the readline command, which only reads one line, the readstat allows you to break a large expression across multiple lines. Another advantage of using the readstat command is that if there is an error in the input, the readstat command automatically repeats the prompt for user input.

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Contemporary Communication Systems Using MATLAB (PWS Bookware Companion) by John G. Proakis Masoud Salehi


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