Programming Note:

Equations using inverse trigonometric functions to determine an angle θ, often look something like this:

θ= arctan (y/x).

If x = 0, then y/x is undefined, resulting in the error: # & . For a program, then, it would be more reliable to determine θ by a rectangular– to polar conversion, which converts (x,y) to (r,θ). See "Coordinate Conversions" later in this chapter.

Hyperbolic Functions

With x in the display:

To Calculate

Press:

 

 

Hyperbolic sine of x (SINH).

z7N

Hyperbolic cosine of x (COSH).

z7Q

Hyperbolic tangent of x (TANH).

z7T

Hyperbolic arc sine of x (ASINH).

z7zL

Hyperbolic arc cosine of x (ACOSH).

z7zO

Hyperbolic arc tangent of x (ATANH).

z7zR

 

 

Percentage Functions

The percentage functions are special (compared with yand p) because they preserve the value of the base number (in the Y–register) when they return the result of the percentage calculation (in the X–register). You can then carry out subsequent calculations using both the base number and the result without reentering the base number.

Real–Number Functions 4–5

File name 32sii-Manual-E-0424

 

Printed Date : 2003/4/24

Size : 17.7 x 25.2 cm