xpoint, ypoint, and zpoint are real numbers that set the x, y, and zcoordi nates as the eyepoint from which to view a 3D plot’s view volume. The ycoordi nate must always be 1 unit less than the view volume’s nearest point (ynear of YVOL). These coordinates are stored in the reserved variable VPAR.

Access:

…µEYEPT

 

 

 

Input/Output:

 

 

 

 

 

 

 

Level 3/Argument 1

Level 2/Argument 2

Level 1/Argument 3

Level 1/Item 1

 

 

 

 

 

 

 

 

xpoint

ypoint

zpoint

 

 

 

 

See also:

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

 

 

 

 

 

 

 

F0λ

Function

 

 

 

Type:

 

 

 

Description: Black Body Emissive Power Function: Returns the fraction of total blackbody emissive power at temperature xT between wavelengths 0 and ylambda. If units are not specified, ylambda has implied units of meters and xT has implied units of K.

F0λ returns a dimensionless fraction.

Access:

…µF

 

 

 

 

Flags:

Numerical Results (–3)

 

 

 

Input/Output:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Level 2/Argument 1

Level 1/Argument 2

 

Level 1/Item 1

 

 

 

 

 

 

 

 

ylambda

xT

xpower

 

 

y

lambda

'symb'

lambda

 

 

 

 

'F0λ(y ,symb)'

 

 

'symb'

xT

'F0λ(symb,xT)'

 

 

'symb1'

'symb2'

'F0λ(symb1,symb2)'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FACT

Command

 

 

 

 

Type:

 

 

 

 

Description: Factorial (Gamma) Function: FACT is the same as ! and is provided for compatibility with the HP 28. See !.

Access: …µFACT

Flags: Numerical Results (–3), Underflow Exception (–20), Overflow Exception (–21)

Input/Output:

Level 1/Argument 1

 

Level 1/Item 1

 

 

 

n

n!

x

Γ(x + 1)

'symb'

'(symb)!'

 

 

 

See also:

COMB, PERM, !

 

 

 

FACTOR

Type: Command

Description: Factorizes a polynomial or an integer:

The function expresses a polynomial as the product of irreducible polynomials.

The function expresses an integer as the product of prime numbers.

Access: Algebra, …×or PALG or POLY

382 Full Command and Function Reference

Page 202
Image 202
HP 50g Graphing, 48gII Graphing manual Factor, …µF0λ