Scientific Calculator Keys

Rotate iPhone to landscape orientation to display the scientific calculator.

2nd: 

Changes the trigonometric buttons (sin, cos, tan, sinh, cosh, and tanh) to their inverse functions (sin^-1, cos^-1, tan^-1, sinh^-1, cosh^-1, and tanh^-1). It also changes ln to log2, and e^x to 2^x. Tap 2nd again to return the buttons to their original functions.

(: 

Opens a parenthetical expression. Expressions can be nested.

): 

Closes a parenthetical expression.

%: 

Calculates percentages, adds markups, and subtracts discounts. To calculate a percentage, use it with the multiplication (x) key. For example, to calculate 8% of 500, enter

500 x 8 % =

which returns 40.

To add a markup or subtract a discount, use it with the plus (+) or minus (–) key. For example, to compute the total cost of a $500 item with an 8% sales tax, enter

500 + 8 % =

which returns 540.

1/x: 

Returns the reciprocal of a value in decimal format.

x²: 

Squares a value.

x³: 

Cubes a value.

y^x: 

Tap between values to raise the first value to the power of the second value. For example, to compute 3⁴, enter

3 y^x 4 =

which returns 81.

x!: 

Calculates the factorial of a value.

√: 

Calculates the square root of a value.

^x√y: 

Use between values to calculate the x root of y. For example to compute ⁴√81, enter

81 ^x√y 4 =

which returns 3.

log: 

Returns the log base 10 of a value.

sin: 

Calculates the sine of a value.

sin^-1: 

Calculates the arc sine of a value. (Available when the 2nd button is tapped.)

cos: 

Calculates the cosine of a value.

cos^-1: 

Calculates the arc cosine of a value. (Available when the 2nd button is tapped.)

tan: 

Calculates the tangent of a value.

tan^-1: 

Calculates the arc tangent of a value. (Available when the 2nd button is tapped.)

ln: 

Calculates the natural log of a value.

log2: 

Calculates the log base 2. (Available when the 2nd button is tapped.)

sinh: 

Calculates the hyperbolic sine of a value.

sinh^-1: 

Calculates the inverse hyperbolic sine of a value. (Available when the 2nd button is tapped.)

cosh: 

Calculates the hyperbolic cosine of a value.

cosh^-1: 

Calculates the inverse hyperbolic cosine of a value. (Available when the 2nd button is tapped.)

tanh: 

Calculates the hyperbolic tangent of a value.

tanh^-1: 

Calculates the inverse hyperbolic tangent of a value. (Available when the 2nd button is tapped.)

e^x: 

Tap after entering a value to raise the constant “e” (2.718281828459045...) to the power of that value.

2^x: 

Calculates 2 to the power of the displayed value. For example, 10 2^x = 1024. (Available when the 2nd button is tapped.)

Rad: 

Changes the mode to express trigonometric functions in radians.

Deg: 

Changes the mode to express trigonometric functions in degrees.

π: 

Enters the value of π (3.141592653589793...).

EE: 

An operator that multiplies the currently displayed value by 10 to the power of the next value you enter.

Rand: 

Returns a random number between 0 and 1.