To evaluate the expression cos(1.23)exp(-0.1)+
(2.3^2-1.7),
- Select Calculators — Expression Calculator... from the Work menu. The Expression Calculator window will open.
- Type cos(1.23)exp(-0.1)+sqrt(2.3^2-1.7) into the Expression Calculator window. Press the Enter key.
Pressing the Return key will only move the cursor to the next line and not evaluate the expression. Alternatively, you can use the mouse to
click the Evaluate button in the lower left corner of the Expression Calculator window to evaluate the expression.
The value of the expression, 2.19716033417, will be written on the next line.
Note: When you press the Enter key, the entire expression on the line containing the flashing
cursor will be evaluated. To evaluate only part of the expression, select the part of the expression that you want by dragging over it and then
press the Enter key.
To find the sum 1 - 1/2 + 1/3 - 1/4 + ... + ((-1)^101) 1/100,
- Scroll the function list on the left side of the window until you find
(i,1,n,f(...,i...)).
Double-click on (i,1,n,f(...,i...)).
The template () will be written into the window's work area.
Finish typing the expression (i,1,100,(-1)^(i+1) 1/i)
and press the Enter key.
To find P(3.21), where P(x) = 2 - 3x + 6x^2 - 4x^3 - 0.2x^4,
- Double-click the poly(x,a0,a1,...,aN) function in the function list. Finish typing the expression
poly(3.21, 2, -3, 6, -4, -0.2) and press the Enter key.
To compute the number of combinations 
,
- Double-click the comb(n,m) function in the function list. Finish typing the expression
comb(10, 3) and press the Enter key.
You can also use the Expression Calculator to evaluate functions that have
been entered into the Work window.
For example, if y1(x) = 3 cos(2x+1) has been entered into the Work window, you can evaluate this function at x = 0.23 by
- Typing y1(0.23) into the Expression Calculator window and pressing the Enter key.
Copyright 2000-2008 Adam O. Hausknecht and Robert E. Kowalczyk