# How do I enter math symbols in an exercise?

While some exercises have a special keypad from which you can choose a math symbol, there are a limited number of symbols available in it. In some cases, there is no special keypad, 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**

Use an asterisk (*****, Shift + 8 on an American keyboard). For example, 3 times 4 is "3*4."

**Division**

Use a slash (**/**) for division. For example, three-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 5*n* would be entered as "12/(5*n*)," and the quantity of *n* plus 3, all divided by 6, would be entered as "(*n*+3)/6.*"*

**Square root**

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

*(For cube roots and other non-square roots, see Fractional exponents.)*

**Pi**

For the number approximately equal to 3.14159..., type "pi."

**Theta**

It's the eighth letter in the Greek alphabet, it looks like a 0 with a horizontal line in the center (**θ**). Type "theta."

**Powers or exponents**

Use a caret (**^**). For example, to enter 4 to the 5th power, type "4^5."

**Fractional exponents**

Use a caret (**^**) and type 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**

You should be able to enter your answer as "log_*b*(*n*)", where *b* is the base and *n* is the number.