Hp 48G Instrukcja Użytkownika Pobierz pdf (Strona 57)

Step S: Since RATFUNC only has one variable, it must be the

unknown variable. Solve for x by highlighting its field and

pressing S 0 L V E.

(T) SOLVE

EQUftTIDN^^«

EOr ' 6^<.x'-2-9}+4y<6+x-

EHTEf; VfltUE BR PREii iOLVE _________

Step J,: Press INFO to determine the nature of the most recent

solution found by the root-finder. The Zero message

indicates that the solver found a solution—a point where the

expression evaluates to “exactly” (that is, to 12 significant

digits) zero.

SOLVE EGUftTION

EG: .¿x(;x-'-2-9)+4r <6+x

x: 1.5

Zero

ENTER VRLUE DR PRESS SOLVE

Step 5: Press

to remove the message box.

Searching for Multiple Solutions

Although an equation or expression may have more than one solution,

the calculator stops when it finds one. Because there was no value

listed for X before you chose to solve for ,r, the solver began looking

for an answer at r = 0 and reported the first solution it found.

However, you can tell the solver to begin its search from a different

point by entering an estimate of the solution before solving for a

variable.

Exaiiiiile: Re-solve RATFUNC beginning with a guess of a- = -2.

Solving Equations 5-3

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 115 116

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Hp 48G Instrukcja Użytkownika Strona 57