Use two different methods to calculate dzu/ar if u = /x² + y². = est, and y = 1 + s² cosz. IUse two dif-

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A: According to our guidelines we can solve only the first question. Please re post the other questions…

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A: As per our guidelines, we are supposed to solve only first question. Kindly repost other question as…

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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.