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How many links would you need in a full mesh configuration if you had 4 nodes? What is the area of a pentagon with a radius of 3 centimeters? A train is accelerating at a rate of 11.8 m/s2. What is this rate in units of nm/ms2? Is anybody able to solve the 2nd order ODE y'' + y' = 1/tÂ² using variation of parameters? How can i simplify this rational expression? i cant figure out what to do since the bottom wont factor. x^2-36/2x^2+11x-6?