11.3_10 Can you please help with a step by step guide? Thank you very much in advance. The rate of change in revenue for Under Armour from 2004 through 2009 can be modeled by dR/dt = 13.897t + 284.653/(t) where R is the revenue (in millions of dollars) and t is the time (in years), with  t = 4  corresponding to 2004. In 2008, the revenue for Under Armour was $725.2 million. (a) Find a model for the revenue of Under Armour. (Round your constant term to two decimal places.)   R(t) = ?   (b) Find Under Armour's revenue in 2005. (Round your answer to two decimal places.)

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.