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QUESTION: Dear Prof Randy

http://en.wikipedia.org/wiki/Scientific_calculator

http://www.math.com/students/calculators/source/scientific.htm

http://www.squarebox.co.uk/scalc.htm

Can there be further enhancements to the Scientific Calculator device functions in addition to the current functions provided by the Device ?

For examples : Matrix Algebra, Computing real roots of quadratic equation, Simultaneous equations, Vector algebra etc

Awaiting your reply,

Thanks & Regards,

Prashant S Akerkar

ANSWER: Any decent scientific calculator will have at least some of the capabilities you list. Vector algebra is interesting, such as a dot or cross-product, but I'm wondering if it would be more trouble inputting everything and then punching a button to solve rather than just crank it out by hand. Either way, only a small number of dimensions (≤ 3 or 4) would be worth the effort.

A function that might be useful that I haven't seen on a calculator is the factorial function, n!. It might be rare to actually need it since a) in using it for permutaiona and combination, the formulas usually don't need a full factorial calculation, b) the numbers can be really huge and thus approximate techniques would be needed (gamma function, Stirling's formula).

Randy

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QUESTION: Dear Prof Randy

Thank you.

http://en.wikipedia.org/wiki/Physical_constant

Do all modern calculators also have physical and chemical constants

useful in physics, chemistry formulas ?

Awaiting your reply,

Thanks & Regards,

Prashant S Akerkar

I don't know about all modern calculators, but the calculator on my Mac has some constants. See attached image (screenshot). This calculator also has linear algebra solutions. Who knew?

BTW, I was wrong about the factorial function; my handheld calculator and my iPhone DO have n! (integers only).

Randy

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Comment | Dear Prof Randy Thank you. Thanks & Regards, Prashant S Akerkar |

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