Distinguish the functional requirements an engineer would have to specify for a taxi dispatch system.

The requirements are mainly written in a feature style notation, using some state charts, context diagrams and other techniques to describe certain parts of the system. See, for example, Software Requirements - Styles and Techniques [Lauesen00].
The functional requirements are divided into four sections. The three modules in figure 1 are developed by separate groups, each responsible for unit testing. All requirements for the taxi, central and communication link component are written in a feature style notation. In addition, a special part of the taxi component is the positioning system. This is dealt with separately since there are special requirements present on this component. The functional requirements consist of four sections: Taxi (3.1), Central (3.2), Communication link (3.3) and Positioning system (3.4). 

My favorite is "be concise."have you ever received an email and had to read a page full of information? by the time you finished reading it, you had to re-read it? i have even hit "reply" so that i could break it down into separate paragraphs and send it back to myself.what is concise? get to the point, fast. when opening an email like this, some will close it or print it to read later.i learned to use the subject line to prepare the reader for content. such as, "need on (blank), " "info only re: (blank)," "request input on (blank)," "read before (blank) meeting." these are just some.if you are asking for something, make that your first sentence. follow this by who, what, when, where, and how. use these, as necessary. example; (1) who (who needs it and or who does it), (2) what (specific description of what is needed), (3) when (specific, i need this by 8: 00 am monday or i need this by 10: 00 am today), (4) where (does it have to be printed and taken to someone, maybe the place of the meeting), (5) how (i need it scanned or faxed back to me at this email address, provide me with a hard copy).do not send yet. re-read it. did some spell check change a word? maybe let someone else read it for understanding. you want to avoid multiple emails asking for clarification. if important, put a read receipt on it. you will know it was opened, not necessarily read.end with a you.

Answer (b) the meter will display a negative sign;