02-04-2015, 06:37 PM
hi,
having to solve a differential equation (t^2*y'=y^2+ty+t^2) in t (time) and y, with desolve I get a message from Terminal, "Homogeneous", than something like [-i*t i*t [G_0*e^ATAN(_t38) G_0*_t38*e^ATAN(_t38)]]
What's, exactly, "_t38"?
Is it possible to simplify in any way?
I should have y(t)=t*TAN(log(|t| + c), as substituting z=y/t and so on...
Generally speaking, I that G_0 is an heritage of the Queen HP50, but perhaps it would be also nice can change it into c0 (or c_0) without use always "subst()"...
Thank you in advance for info
Salvo
having to solve a differential equation (t^2*y'=y^2+ty+t^2) in t (time) and y, with desolve I get a message from Terminal, "Homogeneous", than something like [-i*t i*t [G_0*e^ATAN(_t38) G_0*_t38*e^ATAN(_t38)]]
What's, exactly, "_t38"?
Is it possible to simplify in any way?
I should have y(t)=t*TAN(log(|t| + c), as substituting z=y/t and so on...
Generally speaking, I that G_0 is an heritage of the Queen HP50, but perhaps it would be also nice can change it into c0 (or c_0) without use always "subst()"...
Thank you in advance for info
Salvo