Casio E-CON2 Manual do Utilizador descarregar pdf (Página 13)

Press dto return to the previous screen, press q(REPT) to edit this problem or

continue solving simultaneous equations with three unknowns. To edit just one of the

numbers in the system, arrow to the number to be edited and press r(EDIT) or highlight

the number to be edited and input the new number, then press

Press duntil the Equation Editor screen is displayed. The second mode is Polynomial

w and can be used to solve high-order equations (in standard form) from the 2

to the

degree.

2. To solve the equation x

– 2x

– x + 2 = 0, input the following:

 ww1ln2ln1l2lq

3. To change the equation to x

+ 2x

+ 3x + 2 = 0, select q(REPT) and change the b-

value to 2, the c-value to 3 and press

q(SOLV).

4. The default setting is for real numbers, to change the display to a+bi form, press

for the Polynomial Set-Up menu, select w(a+bi), d, and then

(SOLV).

The third function, Solver

e, allows you to determine the value of any variable in a

formula or equation. You can input any formula exactly as it appears using

a for any

variables. We will take a look at solving a linear equation and a formula.

5. To find the value of

x in the following equation, 2(x  5) = 3x + 2, input the

following starting from the Equation Editor Screen:

 e2jf-5kL.n3f+2lu

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Casio E-CON2 Manual do Utilizador Página 13