DigitsTolType
Digits TolType
This describes an alternative way for determining the tolerance type based on the number of digits.
PG problem file | Explanation |
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DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "PGML.pl" ); TEXT(beginproblem()); |
Initialization: The tolType of type digits is built-in to MathObjects. |
Context("Numeric") Context()->flags->set(tolType=>'digits', tolerance=>3, tolTruncation=>1); $answer = Real("pi"); |
Setup:
In short, this will set the answer checked to see if the student answer matches the correct answer to
The default value of |
BEGIN_PGML This section is with [|tolTruncation|] set to true (1). The exact answer is [`\pi`]. Enter 3.14, 3.15, 3.141, 3.142 to see if it accepts the answer. [`\pi=`][_]{$answer} END_PGML |
First Section: This tests the default characteristic of this answer checker. It should accept 3.14, 3.141 and 3.142 as correct, but not 3.15. |
Context("Numeric"); Context()->flags->set(tolType=>'digits', tolerance=>3, tolTruncation=>0); $answer2 = Real("pi"); |
Second block explanation: First, reset the context with |
BEGIN_PGML This section is with [|tolTruncation|] set to false (0). The exact answer is [`\pi`]. Enter 3.14, 3.15, 3.141, 3.142 to see if it accepts the answer. [`\pi=`][_]{$answer2} END_PGML |
Second Section: This tests the default characteristic of this answer checker. It should accept 3.14, 3.142 as correct, but not 3.141 or 3.15. |
Context("Numeric"); Context()->flags->set(tolType=>'digits', tolerance=>3, tolTruncation=>0,tolExtraDigits=>2); $answer3 = Real("3.14"); |
Second block explanation: First, reset the context with |
BEGIN_PGML If we want to consider only answers to some number to digits. Enter 3.14, 3.15, 3.141, 3.142 to see if it accepts the answer. Enter [`\pi`] to the first 2 decimal places after the decimal point [_]{$answer3} END_PGML |
Third Section: This allows only to the given number of digits (3). It should accept only 3.14 as correct. |