Casio fx-9750G Differential/Quadratic Differential, Inte Manual de usuario descargar pdf (Pagina 3)

3-2 Solve Calculations

To solve calculations, first display the function analysis menu, and then input the

values shown in the formula below to determine root x values in the function f(x).

1(Solve) f(x),n,a,b)

With Solve calculations, the root of a function is determined using Newton’s method.

u Newton’s Method

This method is based on the assumption that f(x) can be approximated by a linear

expression within a very narrow range.

First, a starting value (predicted value)

xo is given. Using this starting value as a

base, approximate value x1 is obtained, and then the left side and right side calcula-

tion results are compared. Next, approximate value x1 is used as the initial value to

calculate the next approximate value x2. This procedure is repeated until the differ-

ence between the left side and right side calculated values is less than some minute

value.

uTo perform solve calculations

Example To calculate the value of root x in the following formula when

the initial estimated value is n = 1, the lower limit is a = 0, and the

upper limit is b = 1:

+ 7x – 9 = 0

Input the function f(x).

AK4(CALC)1(Solve)

cvx+hv-j,

P.64

Initial estimate value Upper limit

Lower limit

1 23456

1 2 3 4 5 6 7 8 ... 15 16

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Casio fx-9750G Differential/Quadratic Differential, Inte Manual de usuario Pagina 3