Student help

How to enter an answer

This guide is the official reference: quiz grading follows these rules exactly. Simple calculator-style entry — no LaTeX in the answer box.

1. General rules

Open = close: every ( needs a ); same for brackets and braces.
No $…$ or LaTeX commands in the answer box.
Multiplication: * optional when clear.
Match the requested format (function, interval, set, number…).

2. Numbers and operations

Command / symbol	Meaning	Example
`+ - * /`	Basic operations	`3*x+1 ou (x+1)/2`
`^`	Power	`x^2 (2x+1)^3 2^(3x)`
`pi`	Constant π	`2*pi ou sin(pi/2)`
`e`	Euler’s number (in e^x)	`e^(4x) ou exp(4x)`
`abs(...)`	Absolute value	`abs(x-1)`

3. Functions

Calculator-style. Arguments go in parentheses.

Command / symbol	Meaning	Example
`sqrt(...)`	Square root √	`sqrt(x) sqrt(x^2-2)`
`cbrt(...)`	Cube root ∛	`cbrt(x) cbrt(x^8)`
`(...) ^(1/n)`	n-th root	`(x)^(1/4)`
`sin cos tan`	Trigonometry	`sin(x) cos(3x) tan(x^2)`
`sec csc cot`	Sec, csc, cot	`sec(3x^2+5)`
`arcsin arccos arctan`	Inverse trig (also asin, acos, atan)	`arctan(5x) asin(x)`
`ln(...) / log(...)`	Natural logarithm	`ln(x) ln(2) 4*ln(x)`
`e^... / exp(...)`	Exponential	`e^(4x) 4*exp(4x)`
`a^(...)`	Exponential base a	`2^(3x) 32^(3x)ln(2)`
`n! / factorial(n) / factorielle(n)`	Factorial — 0!=1, integer n ≥ 0	`0! 5! factorielle(10) 6!/(4!2!)`
`nCr / C(n,r)`	Combinations — 23C2 = C(23,2). For 2×C(3,2), write 2*3C2	`52C5 10c3 22C3/6 2*3C2`
`nPr / nAr / P(n,r) / A(n,r)`	Arrangements P(n,r) or nAr — n ≥ r ≥ 0 (same as nPr)	`4P2 4A2 P(4,2) A(4,2) 10p3`
`sinh cosh tanh`	Hyperbolic (+ arcsinh…)	`sinh(x) tanh(2x)`

Combinatorics (numeric answers) — calculator-style:

Factorial: 0! equals 1; also 5!, factorielle(10).
Combinations: 52C5 = C(52,5); 22C3/6 evaluates C(22,3) first, then divides by 6.
Factorial fractions: 6!/(4!2!) — implicit × between 4! and 2! in the denominator.
Note: 23C2 means C(23,2). For 2 × C(3,2), write 2*3C2 (* required).
Arrangements: 4P2, 4A2 (nAr notation), P(4,2), A(4,2).

4. Intervals

Use brackets. Respect open/closed. Join with U.

Command / symbol	Meaning	Example
`[a, b]`	Closed on both sides	`[0, 1]`
`]a, b[`	Open on both sides	`]0, 1[`
`[a, b[ ]a, b]`	Half-open	`[0, 1[ ]0, 1]`
`oo +oo -oo`	Infinity (type oo, not ∞)	`]-oo, 3[ ]3, +oo[`
`U`	Union of intervals	`]-oo, 3[ U ]3, +oo[`

Always close every bracket. Spaces around U are fine.

5. Limits, series & integrals (±∞)

For these questions, use the menus: finite value, +∞ or −∞, then the form if required.

Command / symbol	Meaning	Example
`Value`	Text field: finite or oo / +oo / -oo (e^(-3) ≈ 1/e^3)	`-1/3 pi oo -oo`
`Form`	First determined or indeterminate (LaTeX in the menu, ±∞)	`0/0 1^(±∞) (±∞)−(±∞)`
`L'Hôpital × n`	If asked: number of rule applications	`1 2`
`Series / integral`	Same value field; disable the form if not needed	`oo pi^2/6`

Suggested order: form (if required) → value. LaTeX prefix/suffix like other questions (e.g. $L=$ ). Partial credit possible.

5. Sets

Command / symbol	Meaning	Example
`{ a, b, c }`	Set of values (braces)	`{-2, 2}`
`,`	Separator between elements	`{0, 1, 4}`

Open { and close }. Order usually does not matter.

6. Points, lists, numbers

Command / symbol	Meaning	Example
`(x, y)`	Point / coordinate pair	`(2, -1)`
`;`	List of several answers	`a;b;c`
`number`	Numeric answer (dot decimal)	`3.14 ou -2`

7. Matching

Matching: each list can be shown or blank. If shown, you only pick the label. If blank, you type the value (grading mode is set by the teacher).

Graph example: left hidden (type abscissas), right shown (LaTeX reasons). Match each value to a letter — row order does not matter. Other blank modes: function, equation, set, interval (domain).

8. Full examples

Factored function

6(2-x^2)^2(1+3x)^3(x+1)(4-5x)

Domain (intervals)

]-oo, -2[ U ]2, +oo[

Solution set

{-1, 4/5}

When in doubt: match the question type and copy the formats above. Always close every opened ( [ {.

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