sigma notation in a WW

[Alex Jordan]

Section 5.3 has an exercisegroup with instructions:
write each sum in summation notation

and exercise statements like:
3 + 6 + 9 + 12 + 15

I'm trying to decide if these should be WW exercises. With
out-of-the-box WW, there is no way to enter sigma notation. There are
some crude things that present the sigma and put answer blanks below,
above, and to the right, but this construct is not doable with
PreTeXt.

And we just want the static (print) version to look the way it does
now, with just that summation string, no unsightly scaffolding for
submitting a WW answer.

So all I can think of is that following the summation string, there could be:

instruction
enter the lower bound here
blank

instruction
enter the upper bound here
blank

instruction
enter the summand expression here, using /i/ as the index variable
blank

"instruction" and lone answer blanks will not appear in the static output.

My question to the group is, is this worth doing? Is it worth asking
the student to fill in answer blanks like this with no sigma in sight?
Alternatively this block could just be left as non-WW.

A similar issue for me will certainly arise soon where the answer is
supposed to be something written in integral notation.

Alex

[Sean Fitzpatrick]

Hmm. Could you do it as:

3+6+9+12+15=\sum_{i=a}^b f(i),

where

a=___

b=___

f(i)=_____

It's also fine to just not code these ones.

--
You received this message because you are subscribed to the Google Groups "APEX/Active Calculus MBX conversion" group.
To unsubscribe from this group and stop receiving emails from it, send an email to apexactive-calculus-mbx...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/apexactive-calculus-mbx-conversion/CA%2BR-jrdsDGCRB0CHWx7_yK2r1Gzn%3DYYb3p6Kk4J8LJS34cXg1w%40mail.gmail.com.

[Alex Jordan]

That's one approach to consider. However it couldn't be like:

a=___

or else you will see that in the print. Also the "=\sum_{i=a}^b f(i),"
would show up in print. It would have to tie all these things into an
"instruction".

Not sure how I feel about introducing extra symbols like the "a" that
are only present to overcome a WW deficiency.

> To view this discussion on the web visit https://groups.google.com/d/msgid/apexactive-calculus-mbx-conversion/CAH%2BNcPagEF5cbSy0XcJR1qnTitdzOUW2mAD5o0yXhMQQDLZwAA%40mail.gmail.com.