Quote (rickibal @ Tue, 9 Dec 2008, 00:00)
Hey Guys, looks like you guys are having a ball without me!

I need a bit of help
Its to do with Economic Dynamics and characterising an equation as a) difference/differential (no prob with this)

order (no prob) c) linear/non linear d) autonomous/non autonomous (no prob)
So its basically linear/non linear I need help with identifying.
t values stand for time periods.
1)
2yt+1-5/yt=2 
need to know if these are linear/non linear and why. Would be great if you could help!
2)
yt+1=(logt)yt+13)
ÿ+2ÿ+2=logy4)
ÿ=y/2+e(power t)my opinion is that 1 and 4 are linear coz it`s simply 1 unknown funcion without (i don`t remember english word for it but at cpu u use this symbol ^ eg. 3^2 = 9)
so as all funcions ^1 are linear this is also. ^2 are parabolic logaritms are usualy parabolic also but i`m not sure atm have math long time ago
and since e stands for 2.718281828182 etc this is also linear funcion
not sure how graph of logarytmic funcion looks like so can`t help however log = parabolic