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vectors multiplication - Printable Version

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vectors multiplication - dennis - 04-23-2004

Hello,
I have the Hp49G calculator and I have a problem:

There is no problem writing [[1,2,3][4,5,6]*[[7,8][9,10][11,12]]
and the calculator gives[[58,64][139,154]].

But if the two matrix are two vectors ((n*1) and (1*n)) the multiplication insn't possible. [ERROR: invalid dimension!!!]
(instead I should obtain a number).
How can I do for solve this operation?


Re: vectors multiplication - Tom Sherman - 04-23-2004

Dennis,

Go to the math menu, select the vectors menu, and then select DOT. If you are in RPN mode, you will want to enter your vectors before doing this; if you are in algebraic mode, the vectors are entered after selecting DOT. If you have a manual, see page 8-5.

I hope it works for you.

Tom


Re: vectors multiplication - dennis - 04-24-2004

Thank you very much Tom,

it works poperly.

Dennis