Apple Newton Works Graphing Calculator Manual de usuario descargar pdf (Pagina 18)

Using the financial functions

The Financial list contains the following functions:

Function Abbreviation Description

Annuity Annuity(rate,periods) Returns the present value of an annuity

(1 – (1 + r)^n)/r

Compound Compound(rate,periods) Returns (1 + r)^n

Examples

Calculate your savings after two years if you deposited $3000 at 5.25% interest,

compounded annually.

3000*compound(.0525,2) -> 3323.27

Calculate the current principal if you’ve made 12 payments of $320 at a rate of 8.5%.

320*annuity(.085,12)

Creating your own functions

You can create functions and use functions that you define. Functions must have a

function name followed by the argument names in parentheses on the left side of the

equals sign and an expression on the right.

Note: You must enter a function name for each expression.

The following are examples of valid functions:

y(x)=sin(x–0.5*pi)

z(x)=sqrt(16–x^2)

r(t)=8cos(t)

p(t)=[4cos(t),3sin(t)]

qrts(a,b,c)=[(–b+sqrt(b^2–4a*c))/(2a),(–b–sqrt(b^2–

4a*c))/(2a)]

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Apple Newton Works Graphing Calculator Manual de usuario Pagina 18