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A particle of unit mass moves in a straight line against a resistance numerically equal to v + v^3, where v is its velocity.Initially the particle is at the origin and is travelling with velocity Q, where Q>0. (a) Show that v is related to the displacement x by the formula x =...

Everyone in my class who came out of the exam is like "Yeah, I liked that exam question. I think I wrote about 5 pages for it." And then there's me. I wrote a page and a half and wish I hadn't handed anything in for that section. It was garbage, pure and simple.