Calculator Notation for Symbolic Questions

Addition

+

x + 1

Subtraction

-

x - 1

-x

Multiplication

*

4*x

4x

Implicit multiplication is allowed.

Division

/

x/4

Exponents

^

*

x**3 or x^3

Parentheses

( )

4/(x + 1)

3(x + 1)

Equal

=

y = 10

Greater than

>

y > 10

Less than

<

y < 10

Greater than or equal to

>=

y >= 10

Less than or equal to

<=

y <= 10

Absolute value

abs()

abs(-5) = 5

Square root

sqrt()

sqrt(x/5)

n th root

root n ()

root5(x - 3)

Factorial

!

5! = 120

(x - 1)!

Trigonometric functions

sin()

cos()

tan()

sec()

csc()

cot()

sin(2x)

atan(pi/4)

cosh(y)

Angles are expressed in radians.

Inverse and hyperbolic functions are also supported with notation like atan() and coth().

Greek letters ( π, α, θ, ∆ )

pi

alpha

theta

Delta

2 pi x

sin(alpha)

2 theta

Delta t

3.14 is only an approximation of π and is not equivalent for grading.

Type the name of a Greek letter in lowercase to enter the lowercase letter, or capitalize it to enter the capital letter.

Scientific notation

e

1e3 = 1000

When entering scientific notation, always use a lowercase e and an integer exponent, for example, 1.23e-5.

Natural log

ln()

ln(x)

Euler's number

exp()

exp(x)

Raises Euler's number to the specified power. For example, exp(2) =

.

General log

log_ b ()

log_2(x + 5)

The specified base must be a natural number.

Positive and negative infinity

infinity

-infinity

(-infinity, 2]

Degrees

deg

30 deg

Radians

rad

pi/6 rad

Subscripts

_

x_2