HP 40gs Manual do Utilizador descarregar pdf (Página 211)

100

101

Computer Algebra System (CAS) 14-29

Typing:

DISTRIB((X+1)·(X+2)·(X+3))

gives:

EPSX0 Disregard small values

EPSX0 has as a parameter an expression in X, and returns

the same expression with the values less than EPS

replaced by zeroes.

Typing:

EPSX0(0.001 + X)

gives, if EPS=0.01:

0 + x

or, if EPS=0.0001:

.001 + x

EXPLN Transform a trigonometric expression into complex

exponentials

EXPLN takes as an argument a trigonometric expression.

It transforms the trigonometric function into exponentials

and logarithms without linearizing it.

EXPLN puts the calculator into complex mode.

Typing:

EXPLN(SIN(X))

gives:

EXP2POW Transform exp(n∗ln(x)) as a power of x

EXP2POW transforms an expression of the form

exp(n × ln(x)), rewriting it as a power of x.

xx2+()x 3+()⋅⋅ 1+ x 2+()x 3+()⋅⋅

ix⋅()exp

-----------------------

–

2 i⋅

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