Matrix index

[ldante]

Hi

Any one can help me to simplify the summation using matrix index.

My advance appreciation for the continuous support in our Math cad community user,

[ValeryOchkov · Accepted solution]

While everyone was asleep, I'll answer

See please the Prime 3.1 sheet in attach

[ldante]

Problem solved.

[StuartBruff]

Or simply use scalar multiplication (^2 squares b's elements) ...

Stuart

[ValeryOchkov]

Good morning, Stuart!

[StuartBruff]

Доброе утро, Валерий!

Я надеюсь, что вы хорошо сегодня.

Stuart

[ValeryOchkov]

Спасибо, Стюарт!

Я забыл добавить к пожеланию доброго утра то, что ваш расчет проще.

Но, как говорят у нас в России, иная простота хуже воровства.

Понимание сути расчета было украдено!

Can you translate it here in English!

[ldante]

Yes we can translate this directly to our outlook

[StuartBruff]

(roughly) ... your calculation is easier.

But, as we say in Russia, (this) other simplification is worse than stealing (because the) understanding of the calculation has been stolen!

(Not if you know vectors, though ... )