The rate of change in data entry speed of the average student is ds/dx = 7(x + 9)-1/2, where x is the number of lessons the student has had and s is in entries per minute. (a) Find the data entry speed as a function of the number of lessons if the average student can complete 42 entries per minute with no lessons (x = 0). s(x) = (b) How many entries per minute can the average student complete after 7 lessons? entries per minute

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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.