HP 49g+ hp 48gii graphing calculator Manuale Utente

 

 

For values of x close to zero, EXPM(x) returns a more accurate result than does EXP(x)–1. 
(Using EXPM allows both the argument and the result to be near zero, and avoids an 
intermediate result near 1. The calculator can express numbers within 10

–449

 of zero, but within 

only 10

–11

 of 1.) 

Access: 

!´

HYPERBOLIC 

L

 EXPM

  

( ´ is the left-shift of the Pkey). 

 

!Р

EXPM

   

 

 

(Рis the left-shift of the 8key). 

Numerical Results (–3) 

 

→ 

'symb' 

→ 

'EXPM(symb)' 

See also: EXP, 

LNP1 

 

Type: Command 
Description: Eye Point Command: Specifies the coordinates of the eye point in a perspective plot. 
 

,

, and z

 are real numbers that set the x-, y-, and z-coordinates as the eye-point from 

which to view a 3D plot

'

s view volume. The y-coordinate must always be 1 unit less than the 

view volume

'

s nearest point (y

 of YVOL). These coordinates are stored in the reserved 

variable VPAR. 

Access: 

…µ

EYEPT

 

 

point

point

point

→ 

See also: 

NUMX, NUMY, XVOL, XXRNG, YVOL, YYRNG, ZVOL 

 

λ

Type: Function 
Description: Black Body Emissive Power Function: Returns the fraction of total black-body emissive power 

at temperature x

T

 between wavelengths 0 and y

lambda

. If units are not specified, y

lambda

 has implied 

units of meters and x

T

 has implied units of K. 

 F0

λ

 returns a dimensionless fraction. 

Access: 

…µ

 F

0

λ 

Numerical Results (–3) 

lambda

T

→ 

power

lambda

'symb' 

→ 

'F0

λ(y

lambda

,symb)' 

'symb' 

T

→ 

'F0

λ(symb,x

T

)' 

'symb

1

' 

'symb

2

' 

→ 

'F0

λ(symb

1

2

)' 

 

 

Type: Command 
Description: Factorial (Gamma) Function: FACT is the same as !.