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henpen Group TitleBest ResponseYou've already chosen the best response.1
\[ y\ddot{y}\dot{y}^2=1\]
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.1
The boundary conditions are \[ y(a)=y(a)=1\] . \[ \large \ddot{y}=\frac{ \dot{y}^2+1}{y} \] Let \[ p=\dot{y}\] . \[ \large \dot{p}=\frac{dp}{dy}p=\frac{ p^2+1}{y}\] \[ \large\int \frac{p}{p^2+1}dp= \int \frac{1}{y}dy\] Let \[ u=p^2\] \[ \large \frac{1}{2}lnu+1 =ln\sqrt{u+1}=lny+c\] \[ \large \sqrt{u+1} =ky\] \[ \large \dot{y}^2+1 =by^2\] What do I do now?
 one year ago

matricked Group TitleBest ResponseYou've already chosen the best response.0
after this dy/dx = sqrt(by21) and then proceed ...
 one year ago
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