While some exercises have a tool from which you can choose a math symbol, there are a limited number of symbols available in the tool. In some cases, there is no tool, and it may not be obvious how you should type a math symbol.

Here's the breakdown on how to enter some common math symbols:

**Multiplication**

Type * or shift-8 on an American keyboard. Example: 3 times 4 is "3*4".

**Division**

Use **/** for division. For example, 3 fourths are entered as *3/4*. If you have any operations in the numerator or denominator, surround this with parentheses. For example, 12 divided by 5n would be entered as *12/(5n)*, and the quantity of n plus 3, all divided by 6, would be entered as "*(n+3)/6".*

**Square root**

SQRT. For example, to enter the square root of 3, type "sqrt(3)".

**Cube roots (and other non-square roots): ***(see fractional exponents.)*

**Pi**

This is for the number approximately equal to 22/7 or 3.14. Type "pi".

**Theta**

This is a Greek letter that looks like a 0 with a horizontal line in the center) Type "theta".

**Powers or exponents**

Use the ^ symbol, also known as a caret. For example, to enter 4 to the 5th power, type "4^5".

**Fractional exponents**

Use the ^ symbol and put the fraction in parentheses. For example, to enter the cube root of x or x to the 1/3 power type "x^(1/3)".

**Greater than or equal to**

Type ">=".

**Less than or equal to**

Type "<=".

**Logarithms**

For base 10 logarithms, enter "log(x)" where x is the number. For natural logarithms enter "ln(x)".

**Logarithms with bases other than 10**

A pop-up box should appear when the cursor is in the answer box. If this does not happen, you should be able to enter your answer as "log_b(n)", where *b* is the base and *n* is the number.