Hp 39g Graphing Calculator Manual do Utilizador descarregar pdf (Página 85)

Solve aplet

About the Solve aplet

The Solve aplet solves an equation or an expression for its

unknown variable. You define an equation or expression in

the symbolic view, then supply values for all the variables

except one in the numeric view. Solve works only with real

numbers.

Note the differences between an equation and an expression:

• An equation contains an equals sign. Its solution is a

value for the unknown variable that makes both sides

have the same value.

• An expression does not contain an equals sign. Its

solution is a root, that is, a value for the unknown

variable that makes the expression have a value of zero.

You can use the Solve aplet to solve an equation for any one

of its variables.

When the Solve aplet is started, it opens in the Solve symbolic

view.

• In Symbolic view, you specify the expression or equation

to solve. You can define up to ten equations (or

expressions), named EO to E9. Each equation can contain

up to 27 real variables, named A to Z and 0.

• In Numeric view, you specify the values of the known

variables, highlight the variable that you want to solve

for, and press

You can solve the equation as many times as you want, using

new values for the knowns and highlighting a different

unknown.

Note: It is not possible to solve for more than one variable at

once. Simultaneous linear equations, for example, should be

solved using matrices or graphs in the Function aplet.

Solve aplet

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Hp 39g Graphing Calculator Manual do Utilizador Página 85