EnglishUP PCS (Pre) 2009
Q481.The differential equation x dx+y dy = 0 represents the family of
Correct answer: Circles
Math Chapter Wise subcategory
Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations questions
EnglishUP PCS (Pre) 2009
Correct answer: 4
EnglishUP PCS (Pre) 2009
Q483.The isoclines of the differential equation 2 dy x = ax + bxy are dx
Correct answer: a family of straight lines
EnglishUP PCS (Pre) 2009
Q484.The orthogonal trajectories of y = mx, where m is a parameter, are
Correct answer: x2 +y2 = c2
EnglishUP PCS (Pre) 2009
Q485.The differential equation 2xy dx+(ax2 +3y2) dy = 0 is exact, if a is equal to
Correct answer: 1
EnglishUP PCS (Pre) 2009
Q486.The differential equation () 2 dy y - x = y, dx is linear in
Correct answer: y
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