Author a vector of formulas sub-type

This sub-type is authored by selecting the Vector of formulas option from the Sub-type drop-down list during mathematical formula question authoring.

Examples of accepted syntax for defining the Answer field value for this sub-type are:

• (2, 5)
• (2, 4*t, 7*t+1)

The vectors of formulas sub-type Answer field:

• Accepts an ordered list of numbers or formulas separated by commas and enclosed in parentheses (Example — a Cartesian point or a vector).

• Accepts the full range of functions in the formulas (trigonometric functions, log, ln, abs, and sqrt).

• Accepts equivalent responses.

• Is recommended for questions about Cartesian coordinates or vectors.

TIP: Be sure to author instructions for your students to inform them to enter a list of formulas separated by commas and enclosed in parentheses.

NOTE: The vector of formulas question is one of the ten sub-types of the mathematical formula question. Check out Choose a mathematical formula question sub-type for an explanation of each of the ten available mathematical formula question sub-types.

TIP: Check out Author a mathematical formula question for full question authoring instructions.

Example of this sub-type

• Question statement:

Find the minimum point of the given function:

(x-2)² + 5

Provide your answer as a list separated by commas. Enclose your list in parentheses.

• Answer field syntax:

(2,5)

Example of this sub-type with an algorithm

• Question statement:

Find the minimum point of the given function:

$plot

Provide your answer as a list separated by commas. Enclose your list in parentheses.

• Algorithm:

1
2
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$a = rint(1,6);
$b = rint(2,10);
$bottomrange = $a-2;
$toprange = $a+2;
$plot = plotmaple("plot((x-$a)^2 + $b, x=$bottomrange..$toprange), plotoptions='width=250, height=250'");

• Answer field syntax:

($a,$b)

NOTE: The dollar sign ($) character can only be used in mathematical formula questions when it's a part of a variable name. Be sure to define algorithmic variables in the Algorithm pane in order to use them in the Answer field.