(Bug?) HP48 Equation Library

[rprosperi]

(02-14-2017 01:30 AM)SlideRule Wrote:  My apologies - see attached PDF for the source of this discussion and the subsequent references to variables and assigned values. This should have been included earlier in the discussion for those who might not have access to the 48 Advanced User Reference Manual.
The yellow highlights are the items of interest. I am in complete agreement with respect to 'knowing' the authors intent; beyond my skills as well. Your interpretation is as valid as any.

c is defined on page 4-1 as the Distance (from the 'wall') to the applied Moment (M), whereas Mx is the Bending Moment at distance x along the beam.

Authors could have chosen less confusing symbology.

c does matter to understand the externally applied Moment although it is not used in the core Bending Moment calculation. Basically, if c is less than x or greater than x determines the role of the applied moment in the overall calculation. In the example, try plugging-in different values of c while holding all other variables constant and you will see the resulting Mx changes when c exceeds x.