The value of a machine, V, at the end of t years is given by v=C(1-r)t, where C is the original cost and r is the rate of depreciation. Find the value of a machine at the end of 4 years if the original cost was $1930 and r=0.1. Round to the nearest cent.

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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.