User manual

ECTACO
®
jetBook
®
COLOR User Manual
56
 Using the stylus, place the cursor in the To field and enter the
right endpoint value: 5.
 Using the stylus, place the cursor in the Step field and enter the
value 0.01 (the leading zero can be omitted).
 Tap the = key.
The program will calculate the y-coordinate for each value of x in
intervals of Step, and plot the graph.
To return, press on the device.
The program is capable of calculating a function value for a given
number. Let's calculate the square root of 3.
 Using the stylus, "press" the following on-screen keys:
sqrt, 3 , ) , = .
 To set trigonometric input for radians, select Radian.
 To graph in polar coordinates, select Polar.
 To access inverse functions, select Inv.
 To clear screen, tap the C/CE key.
Scientific Calculator
This application performs basic arithmetic, such as addition and
subtraction, as well as functions found on a scientific calculator,
such as logarithms and factorials.
 In the Main Menu, select Science and Math. You will see the
Science and Math window.
 Select Scientific Calculator.
 Using the stylus, enter the value of argument and then tap the
desired function key.
For trigonometric calculations, choose a unit of measure: Radians,
Degrees, or Grads.