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Substitute all "i" and "j" with 1...4 in 4th polynomial function?

SOLVED
ptc-5390394
Newbie

Substitute all "i" and "j" with 1...4 in 4th polynomial function?

Hello,

I have this 4th degree polynomial function:

Image+004.png

and I want to write it this way:

Image+005.png

you know, substitute all "i" and "j" with 1...4. I dont want to do it manualy 🙂

Can MathCad help me somehow?

Thank you.

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Substitute all "i" and "j" with 1...4 in 4th polynomial function?

Use symbolic evaluation

pol8deg.png

I would call this a polynomial of 4th degree

pol4deg.png

View solution in original post

4 REPLIES 4

Re: Substitute all "i" and "j" with 1...4 in 4th polynomial function?

Use symbolic evaluation

pol8deg.png

I would call this a polynomial of 4th degree

pol4deg.png

View solution in original post

Re: Substitute all "i" and "j" with 1...4 in 4th polynomial function?

Sorr for my mistake... I am not math pro...

Your solution looks pretty obvious, but I still have only this:

Image+006.png

I just cannot write that small comma between "i" and "j"

Thank you.

Re: Substitute all "i" and "j" with 1...4 in 4th polynomial function?

You need to use vector/matrix indices (matrix palette or by typing [), not literal ones.

Re: Substitute all "i" and "j" with 1...4 in 4th polynomial function?

Done!

Thank you very much!

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