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equivSyntax

equivSyntax

Overview

equivSyntax compares the learner response against a syntax pattern specified in the validation settings.

This method is a purely syntactic check and is unaffected by numeric values. Use equivSyntax as a supporting method in combination with equivSymbolic and equivValue to constrain possible response options.

Options

Ignore text
This refers to LaTeX text only, and when enabled will ignore any LaTeX text the student enters in the response area.

Rule
There are nine possible rules available. Some rules have an additional argument associated with them. Users can specify arguments to further define the desired correct answer. See examples below.

  • Number - Any integer or floating point.
    • Argument: Decimal places
  • Integer - Any integer.
    • Argument: Significant figures
  • Decimal - Any decimal.
    • Argument: Decimal places
  • Scientific - Any number in scientific notation. 
    • Argument: Decimal places
  • Variable - Any variable. 
  • Fraction - Any fraction, either a simple or mixed fraction.
  • Mixed fraction - Any mixed fraction.
  • Simple fraction - Any simple fraction.
  • Fraction or decimal - A fraction or a decimal.

 

Rule

Argument

Input

Result

Number

 

2

0.5

.5

.500

.834

1/2

true

true

true

true

true

false

Number

1

0.5

.5

.500

true

true

false

Integer

 

5

0.50

1÷2

50%

true

false

false

false

Integer

3

100

1000

true

false

Decimal

 

1.0

1.23

1.

1

true

true

true

false

Decimal

3

1.000

1.234

1.2

true

true

false

Scientific

 

2 \times 10^3

1.2 \times 10^{-2}

10 \times 10^2

true

true

false

Scientific

2

2.34 \times 10^3

1.2 \times 10^{-2}

true

false

Variable

 

x

y

a

b

foo

true

true

true

true

false

 

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