HP 35s User Manual page 4

hp calculators
HP 35s Solving numeric integration problems
Answer: The area under the 1/X curve from 1 to 10 is approximately 2.3026. Figure 4 shows the uncertainty of the
result assuming algebraic mode. In RPN mode, the uncertainty is shown in the second level of the stack.
Example 2: Integrate the function Sin
radians mode.
Solution: In either RPN or algebraic mode:
Note: It is possible to write the equation using the
function is may be clearer to read. The display should look similar to the one shown in Figure 5.
To show the checksum and length of this equation, press the following in RPN or algebraic mode. Note that
the symbol
In RPN or algebraic mode:
If the checksum of the equation just entered does not equal C615, then you have not entered it correctly.
To exit equation mode, press:
In RPN or algebraic mode:
Now enter the lower and upper limits of the integration.
In RPN mode:
In algebraic mode:
Integrate the function using X as the variable of integration.
After a few moments, the HP 35s will display the answer shown below.
hp calculators
(X) from 0 to ∏. Use FIX 4 as the display setting. Make sure the HP 35s is in
2
¹
means to press the right arrow cursor key.
9
Õ
function, but the equation displayed using the
- 4 - HP 35s Solving numeric integration problems - Version 1.0
Figure 4
Figure 5
Figure 6