HP 40gs Manual de usuario descargar pdf (Pagina 216)

100

101

14-34 Computer Algebra System (CAS)

To produce the solutions for y(0) = 1, type:

which gives:

Example 2

Solve:

y” + y = cos(x)

y(0) = 1 y’(0) = 1

It is possible to solve for the constants from the outset.

Typing:

DESOLVE((d1d1Y(X)+Y(X)=COS(X))

AND (Y(0)=1) AND (d1Y(0)=1),Y(X))

gives:

ISOLATE The zeros of an expression

ISOLATE returns the values that are the zeros of an

expression or an equation.

ISOLATE has two parameters: an expression or equation,

and the name of the variable to isolate (ignoring

REALASSUME).

Typing:

ISOLATE(X

-1=3,X)

gives in real mode:

(x = √2) OR (x = −√2)

and in complex mode:

(x = √2 · i) OR (x = −√2) OR

(x = −(√2 · i)) OR (x = √2)

UBST Y X()(

C0 COS X()⋅

X2+cC1⋅

----------------+ SIN X()cC0,⋅ 1 )

yx()

2 x()cos⋅ x 2+ cC1⋅()+ x()sin⋅

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

Yx() xcos

2 x+

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

+ x()sin⋅=

hp40g+.book Page 34 Friday, December 9, 2005 1:03 AM

1 2 ... 211 212 213 214 215 216 217 218 219 220 221 ... 443 444

Comentarios a estos manuales

Sin comentarios

HP 40gs Manual de usuario Pagina 216

Comentarios a estos manuales

Relacionado con productos y manuales para Software HP 40gs