HP 35s

Integrating Equations 8-3
Example: Bessel Function.
The Bessel function of the first kind of order 0 can be expressed as
Find the Bessel function for x–values of 2 and 3.
Enter the expression that defines the integrand's function:
cos (x sin t )
Now integrate this function with respect to t from zero to π ; x = 2.
Keys: Display: Description:
 
()
Ö()
Clears memory.

  
  
Selects Equation mode.
X

Types the equation.




ÕÕ
_


Terminates the expression and
displays its left end.



Checksum and length.

Leaves Equation mode.
Keys: Display: Description:
9 ()
Selects Radians mode.
 

Enters the limits of integration
(lower limit first).


Displays the function.

∫  _
Prompts for the variable of
integration.
∫
=
π
π
dttxxJ
0
0
)sincos(
1
)(
