number
text
-
blank
PTX:FALLBACK: a "fillin" of interactive exercise "" has no @mode, so "string" will be used. A response is then compared as plain text, and an @ansobj answer is rendered with its "toString" and not as mathematics. Set @mode to "math", "number", or "string" to say which is wanted.
:
PTX:WARNING: a "jslibrary" element needs either a @source (project-local) or a @url (remote) attribute, and this one has neither, so it will be ignored.
,
[%=
toTeX(
)
%]
v._mobjs = new BTM({
'rand': rand
});
var RNG = v._mobjs.menv.rng;
const _config = v._config = JSON.parse("
");
v.
= v._mobjs.addMathObject(
,
set
,
1
);
v.types = [
,
];
v._mobjs.getParser()
Number
function(val){ return val; }
v.afterContentRender = function() {
};
!
.
[
{
function() {
return (Math.abs(
- ans) < 1e-10);
}
function() {
return (
== ans);
}
function() {
return _mobjs.compareExpressions(
, ans
);
}
PTX:ERROR: fillin has an @ansobj with invalid or missing mode (valid: number|string|math) in "".
PTX:ERROR: No method provided to identify a correct answer for #fillin in "".
, "feedback": "
"}
,
, {"feedback": "
"}]
PTX:ERROR: several "evaluate" share the name "" in "".
[{"feedback": "[Error: Several evaluate elements share this blank's name]"}]
PTX:ERROR: blank named "" of "" was matched by position to an "evaluate" named "". The names must agree, or the blank must be left unnamed.
PTX:WARNING: the "evaluate" named "" in "" was matched to blank by position,
because that blank has no @name. A name on an "evaluate" is only used to pair it with a "fillin"
carrying the same name; give the blank @name="" to make
the pairing explicit, or drop the name from the "evaluate".
PTX:ERROR: No matching #evaluate for #fillin in "".
[{"feedback": "[Error: No evaluate to match this blank]"}]
{
, "feedback": "
"}
0
"number": [
,
]
0
-
+
"solution_code":
function() {
return (ans >=
) && (ans <=
); }()
i
i
"regex": "
^\s*
\s*$
"
, "regexFlags": "
"
`${
}`
`
`
i
i
"solution_code":
function(){
const re_str = ;
const re = new RegExp(re_str, "
");
return re.test(ans);
}()
${
}
"solution_code":
function() {
var testResults = new Array();
return (testResults[0]);
}()
testResults[
] =
testResults[
] = testResults[
];
testResults[
] =
_mobjs.compareExpressions(
PTX:ERROR: Feedback for "" says to use given math answer, but @ansobj not defined.
UNDEFINED
, ans
, ans
, ans
,
, ans
)
;
testResults[] = 1;
testResults[] = 0;
PTX:ERROR: Invalid logic operator in dynamic fillin for ""
testResults[
] = 1;
testResults[
] = 0;
testResults[
] &= testResults[];
testResults[
] |= testResults[];
testResults[
] = !(testResults[]);
v.
_mobjs
.parseExpression(
, "number")
.reduce().simplifyConstants()
v.
_mobjs
.evaluateExpression(
, "number", {
,
})
.reduce().simplifyConstants()
v._mobjs.generateRandom("discrete", { min:
0
, max:
1
, by:
1
, nonzero:
true
false
})
v.
_mobjs
.parseExpression(
, "formula")
.reduce().simplifyConstants()
v.
_mobjs
.composeExpression(
, {
,
})
.reduce().simplifyConstants()
v.
_mobjs
.derivative(
)
.reduce().simplifyConstants()
v.
:
v.