Difference between revisions of "TableOfValues1"
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| Line 65: | Line 65: | ||
<pre> |
<pre> |
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Context("Numeric"); |
Context("Numeric"); |
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| − | |||
| − | @answer = (); |
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$f = Formula("3^(-x)"); |
$f = Formula("3^(-x)"); |
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| + | @answer = (); |
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foreach my $i (0..2) { |
foreach my $i (0..2) { |
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$answer[$i] = $f->eval(x=>$i); |
$answer[$i] = $f->eval(x=>$i); |
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| Line 78: | Line 77: | ||
<p> |
<p> |
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<b>Setup:</b> |
<b>Setup:</b> |
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| + | We create an empty array <code>@answer</code> and use a foreach loop to simplify filling it with values. |
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</p> |
</p> |
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</td> |
</td> |
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Revision as of 19:40, 1 December 2010
Fill in a Table of Values for a Function
This PG code shows how to create a table with answer blanks in it.
- Download file: File:TableOfValues1.txt (change the file extension from txt to pg when you save it)
- File location in NPL:
NationalProblemLibrary/FortLewis/Authoring/Templates/Precalc/TableOfValues1.pg
| PG problem file | Explanation |
|---|---|
|
Problem tagging: |
|
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "AnswerFormatHelp.pl", ); TEXT(beginproblem()); |
Initialization: |
Context("Numeric");
$f = Formula("3^(-x)");
@answer = ();
foreach my $i (0..2) {
$answer[$i] = $f->eval(x=>$i);
}
|
Setup:
We create an empty array |
Context()->texStrings;
BEGIN_TEXT
If \( f(x) = $f \), fill in the table of values with numbers.
\{ AnswerFormatHelp("numbers") \}
$PAR
$BCENTER
\{
begintable(5) .
row( "\(x = \)", "0", "1", "2" ) .
row( "\(f(x) = \)", ans_rule(5), ans_rule(5), ans_rule(5) ) .
endtable();
\}
$ECENTER
END_TEXT
Context()->normalStrings;
|
Main Text:
Notice that the table is inside a Perl code block |
$showPartialCorrectAnswers = 1;
foreach my $i (0..2) {
ANS( $answer[$i]->cmp() );
}
|
Answer Evaluation: |
Context()->texStrings;
BEGIN_SOLUTION
${PAR}SOLUTION:${PAR}
Solution explanation goes here.
END_SOLUTION
Context()->normalStrings;
COMMENT('MathObject version.');
ENDDOCUMENT();
|
Solution: |
