(c) A manufacturer of television tubes has two types of tubes, A and B. Respectively, the tubes have mean life time of X, = 1495 hours and X, = 1875 hours, and standard deviations of &, 280 hours and &3 = 310 hours. Which tube has the greater (i) absolute dispersion and (ii) relative dispersion? %3D %3D %3D

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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.