HP NW280AAABA Uživatelský manuál stáhnout pdf (Strana 329)

100

101

Functions and commands 323

Matrix

These functions work on matrix data stored in matrix

variables. They are explained in detail in chapter 25,

“Matrices”, beginning on page 463.

Special

Beta Returns the value of the beta function ( for two numbers a

and b.

Beta(a,b)

Gamma Returns the value of the gamma function ( for a number a.

Gamma(a)

Psi Returns the value of the nth derivative of the digamma function

at x=a, where the digamma function is the first derivative of

ln((x)).

Psi(a,n)

Zeta Returns the value of the zeta function (Z) for a real x.

Zeta(x)

erf Returns the floating point value of the error function at x=a.

erf(a)

erfc Returns the value of the complementary error function at x=a.

erfc(a)

Ei Returns the exponential integral of an expression.

Ei(Expr)

Si Returns the sine integral of an expression.

Si(Expr)

Ci Returns the cosine integral of an expression.

Ci(Expr)

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