Hp 48g Graphing Calculator Manual do Utilizador descarregar pdf (Página 217)

100

101

To ewaluate a polynomial at a giwen walue:

1. Enter the polynomial in coefficient form onto the stack.

2. Enter the given value at which you want to evaluate the

polynomial.

3. Press ¡»^fSOLVEl POLY PtS-'FlL.

To con’i'ert s polynomial froni coefilcient to algebraic form:

1. Open the polynomial root-finder.

2. If it doesn’t already contain the polynomial in coefficient form,

enter it into the COEFFICIENTS field.

3. With the highlight on the COEFFICIENTS field, press SYMB

The symbolic polynomial is sent to the stack using x as the

variable.

Solving a System of Linear Equations;

The HP 48 can solve a system of linear equations. To create your

system of equations, you can either choose them from among those

you've stored, or enter them directly.

As you solve a system of equations, remember that a system of

equations can be represented by a. single matrix equation of the form

AX = B:

Equation Form

Matrix Form

ax 4- by 4- Q.Z = ki

dx 4- ey — fc = k-2

gx + liy 4- ic = ka

' a b c ’

'x"

d e —f

-g h 1 .

_ z _

.ka.

The HP 48 makes use of this representation to solve systems of linear

equations rapidly and efficiently.

to begiji the Linear System1. Press iT^fSOCTEl (A) ® U

Solver.

2. Enter the matrix of coefficients in the H!: field. You can use either

the MatrixWriter or the command line.

Solving Equations 18-11

1 2 ... 212 213 214 215 216 217 218 219 220 221 222 ... 611 612

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