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I have a differntial equation that I came up with on a little engineering problem posted here https://www.physicsforums.com/showthread.php?t=129247 that I can't solve. It is d^2R/dt^2=W^2*R where R is radial position and W is angular velocity and t is time. I think it is an autonomous diff eq. but don't know, its been a while since math class. Any ideas?? Thanks

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# Second order Autonomous Differential Equations

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