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Advanced calculus topics from Diff EQ go here.enTue, 22 Jan 2019 10:18:57 GMTvBulletin60https://www.freemathhelp.com/forum/images/misc/rss.pngFree Math Help Forum - Differential Equations
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planetary gear outputs
https://www.freemathhelp.com/forum/threads/114211-planetary-gear-outputs?goto=newpost
Sun, 20 Jan 2019 07:18:26 GMTlet me know if this is posted in the wrong place
what is the math to find out the output of more complex planetary gears? say something like...let me know if this is posted in the wrong place

what is the math to find out the output of more complex planetary gears? say something like 2:1-2:1-2:5 with the first 2 being the input and the 5 the "big gear"
if the big gear is 100% output its as simple to work out as a normal gear train (1:1.6) but if the big gear is locked than what would the math be? using brute force i work the output to be 1:26.666~ but what is the formula to get that?
]]>Differential EquationsfifthFunctionhttps://www.freemathhelp.com/forum/threads/114211-planetary-gear-outputsConverting ODE into Characteristic Form
https://www.freemathhelp.com/forum/threads/114197-Converting-ODE-into-Characteristic-Form?goto=newpost
Sat, 19 Jan 2019 00:18:42 GMTHi,

i am trying to convert this ODE into characteristic form but i'm having problems after expanding the expression. Please advice.

]]>Differential EquationsPhyloxhttps://www.freemathhelp.com/forum/threads/114197-Converting-ODE-into-Characteristic-Forma first order separable differential equations solution
https://www.freemathhelp.com/forum/threads/114033-a-first-order-separable-differential-equations-solution?goto=newpost
Fri, 04 Jan 2019 21:10:04 GMTHi to all,

I have this beautifull diff. eq. : y'=(1-y^2)/(1-x^2)
the solution is not a problem. (also with Derive6 or Ti89) y=(c(x+1)+x-1)/(c(x+1)-x+1)
but the book says : y=(x+c)/(cx+1) and verifying is correct too.
axes traslstions ? or something else ? :confused: