Sin ( ) – HP 35s Scientific Calculator User Manual

Page 138

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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

)

(t

f

π

0

)

(t

f

dx

x

x

t

S

t

i

)

sin

(

)

(

0

=

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