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Sir,as i know about fx-991ms calculator,it contains above 400 functions.but my calculator fx-991ms calculator contains only 240 functions.sir pls inform me why this?

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How did you arrive at this lowly number of 240?. Did you actually count them? Did you use them all? Some may be accessible through a specific sequence of key presses and for that you will have to read the whole manual.
Your calculator contains physical constants (and there is bunch of them). It can do conversions between units and back. Each physical unit and each conversion in one way is a function.

If your calculator is defective you will have better luck detecting the defect by thinking about a function that you want and verify if your calculator has it.

To distinguish themselves from competitors manufacturers make many claims and the claimed number of functions is one such point they try to emphasize with the consumers. No one can easily verify the claim unless one knows what the manufacturer calls a function. (remember these are not mathematical functions but functionalities (capabilities). Having two line display may be one of them and so is the replay.

Posted on Sep 05, 2010

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