ATAN

Arc tangent: tan–1x. Output range is from –90° to 90°,

 

2π/2 to π/2, or –100 to 100 grads. Inputs and outputs

 

depend on the current angle format. Also accepts

 

complex numbers.

 

ATAN(value)

 

Example

 

ATAN(1) returns 45 (Degrees mode).

Square. Also accepts complex numbers.

 

value2

 

 

 

 

Example

 

 

 

 

182 returns

324

 

 

 

Square root. Also accepts complex numbers.

 

 

value

 

 

 

 

Example

 

 

 

 

 

 

returns

18

 

 

 

 

324

 

Negation. Also accepts complex numbers.

 

–value

 

 

 

 

Example

 

 

 

 

-(1,2) returns (-1,-2)

 

Power (x raised to y). Also accepts complex numbers.

 

value^power

 

 

 

 

Example

 

 

 

 

2^8 returns

256

 

 

 

Absolute value. For a complex number, this is

 

.

ABS

x2 + y2

ABS(value)

ABS((x,y))

Example

ABS(–1) returns 1

ABS((1,2)) returns 2.2360679775

Using mathematical functions

13-5