Thanks for the tip. Although from the first example in ref/If the If[] should work, Mathematica seems happier
with Piecewise[]. Then I was advised to "rationalize" the decimal fractions in the equations, which in this case
was easy to do (e.g. 1/2, 3/4, 2/100). The revised file is attached.
After these changes, Mathematica chugs for a few seconds, then spits out a multi-line version of the call
to RSolve[], without solving it (and no error message). Is it just me, or is this behavior of Mathematica
when it (apparently) can't solve the equations, a bit quirky?
Attachments:
