Hi!

I want to know if I am using the most current method to require exact answers in WebWork problems.

I found a way to require no decimals in student answers (in order to force an exact answer like pi to be entered.

It is:

ANS(no_decimals("$c/2 *pi"));

and it requires that I load: "PGasu.pl",

I also kept students from entering functions in their numeric answer using:

Context()->flags->set(

reduceConstants=>0, # no decimals

reduceConstantFunctions=>1, # combine 4+5*2?

formatStudentAnswer=>'parsed', # no decimals

);

My question is: Is there a "better" way to do this same thing using a MathObject checker?

I saw something about NumberCheck, but no code examples that I could find on how to use it as I want to in a WebWork problem.

I also found another method called: exact_no_trig

It seems to do about the same thing as what I implemented above, but it still seems to not be a MathObjects checker, right?

Thanks!

Paul