The basic syntax for entering mathematical formulas or expressions in the system enables you to quickly enter expressions using 2-D notation. You can type formulas using standard mathematical notation (similar to that used for a graphing calculator) and, in general, the system correctly interprets it.

For example, the following formula is acceptable.

(x^2-2x+1) 2sin(x) (x^2+1)e^(-x^2)

**Note**: If
a product includes one or more variables, always use an asterisk "*****". For example,
specify 2*$A.

For a **Maple**
question, you must always include an asterisk (*).

(x^2-2*x+1)*2*sin(x)*(x^2+1)*e^(-x^2)

The most common mistake is to forget parentheses "**()**".
For example, the expression:

1/(x+1)

is different from:

1/x+1

which the system interprets as:

(1/x) + 1

Alternatively, you can use MathML expressions, which are supported for both display and content within the system.

You can use any letter for a variable name.

**Note:** The grading system is
case sensitive with respect to variable names. So if the correct answer
is:

(t+1)^2

then the response

T^2 + 2T +1

is graded wrong, but

t^2 + 2t +1

is correct.

**Note:** Be certain that the case
of letters like x and X
or v
and V in answers match the case of the variables
in questions.

For:

Multiplication, use an asterisk "

*****". Alternatively, simply write:Two letters with a space (for example,

**x y**)A letter and a number with or without a space (for example,

**2x**or**2 x**). Note that two letters without a space represents a single variable name.For Maple-graded questions, you must include an asterisk

*****, for example**2*x**and not**2x**,**x*y**and not**xy**, or**x*y**and not**x y,**which will be marked incorrect.Exponentiation, use the caret "^".

Euler's Constant, 2.718..., use the letter e. (The exponential function is e^x.) For Maple-graded questions, use the

**exp**function:**exp(1)**.Scientific notation, use the upper case letter E. (For example,

**0.78**is**7.8E-2**.)The trigonometric constant,

**3.141...**, use pi in Text Mode. For Maple-graded questions, use Pi. In the Symbol Editor Mode, enter ALT-P for pi or select it from the palette.Common mathematical functions, use the standard abbreviated names (for example, sin, cos, and tan).

The arguments of trigonometric functions, remember they are measured in radians.

The square root function, use sqrt(x). (Alternatively, use x^(1/2) or x^0.5.) In 2-D Text Entry Mode the square root function is sqrt(x). (Alternatively, you can enter x^(1/2) or x^0.5.) In Symbol Mode, use the keyboard shortcut # for square root, or pick the symbol from the Tools Palette.

The inverse trigonometric functions, use the standard abbreviated names (arcsin(x), arccos(x), and arctan(x)).

**Note**: The variable
**e** should *not*
be assigned as a global variable in **Maple**
code. It can be used, however, as a local variable.

See Also: