For more information – HP 35s Scientific Calculator User Manual
Page 142
8-8
This uncertainty indicates that the result might be correct to only three decimal
places. In reality, this result is accurate to seven decimal places when compared
with the actual value of this integral. Since the uncertainty of a result is calculated
conservatively, the calculator's approximation in most cases is more accurate than
its uncertainty indicates.
For More Information
This chapter gives you instructions for using integration in the HP 35s over a wide
range of applications. Appendix E contains more detailed information about how
the algorithm for integration works, conditions that could cause incorrect results and
conditions that prolong calculation time, and obtaining the current approximation to
an integral.
Keys:
Display:
Description:
8
()
Specifies accuracy to four decimal
places. The uncertainty from the
last example is still in the display.
Rolls down the limits of integration
from the Z– and T–registers into
the X– and Y–registers.
Displays the current equation.
X
∫
Calculates the result.
Note that the uncertainty is about
1/100 as large as the uncertainty
of the SCI 2 result calculated
previously.
8
()
Restores FIX 4 format.
9
()
Restores Degrees mode.