Integrating InterpolatingFunction
- To: mathgroup at smc.vnet.net
- Subject: [mg105895] Integrating InterpolatingFunction
- From: blamm64 <blamm64 at charter.net>
- Date: Thu, 24 Dec 2009 00:14:50 -0500 (EST)
Man, how stupid am I?! (please don't answer that). My post just
previous to this ( I could not find a way to delete it and thereby not
suffer the shame of public humiliation) was full of errors, so I
apologize if you waded through it.
Several blunders in that post. In the definition of
xPfmodel[t_]=Integrate[fmodel[dp3p4],{s,0,t}];
dp3p4 = p3[t] - p4[t] was already set, so the definition should have
been
xPfmodel[t_]=Integrate[fmodel[p3[s]-p4[s]],{s,0,t}];
The definition xP2[t_]=Integrate[qFCnoT,{s,0,t}];
was stupid as well, it should have been
xP2[t_]=Integrate[qFCnoT /. t->s,{s,0,t}];
Which will give precisely the same result as
xP[t_]=Integrate[qFC[s],{s,0,t}] !
and I'm back where I started. So, I am really stuck.
So my question is:
Given qFC[t_] = qFConIN[p3[t] - p4[t]] (which works fine), where
qFConIN is an InterpolatingFunction,
how can I get, effectively, something equivalent to
xP[t_]=Integrate[qFC[s],{s,0,t}] ?
-Brian L.