HP 35s User Manual

8-4 Integrating Equations
Now calculate J
0
(3) with the same limits of integration. You must re-specify the limits
of integration (0, π) since they were pushed off the stack by the subsequent division
by π.
Example: Sine Integral.
Certain problems in communications theory (for example, pulse transmission
through idealized networks) require calculating an integral (sometimes called the
sine integral) of the form
Find Si (2).


value
Prompts for value of X.


∫ 

x = 2. Starts integrating;
calculates result for
  

The final result for J
0
(2).
Keys: Display: Description:


Enters the limits of integration
(lower limit first).


Displays the current equation.

∫  _ Prompts for the variable of
integration.



Prompts for value of X.


∫ 

x = 3. Starts integrating and
calculates the result for
.
  

The final result for
J
0
(3).
∫
π
0
)(tf


∫
π
0
)(tf


dx
x
x
tS
t
i
)
sin
( )(
0
∫
=

HP 35s Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Black
Digits	14 digits
Display number of lines	2 lines
Keyboard type	Alphanumeric
Menus and prompts	Yes

Weight and Dimensions

Dimensions (WxDxH)	157.9 x 18 x 82 mm