Math Chapter Wise question with answer

Q01 The differential equation P dx + Q dy = 0 is exact, if: English · UP PCS (Pre) 1996 Q02 An integrating factor for making the differential equation (xy+1) y dx+ (xy–1) x dy = 0 exact is: English · UP PCS (Pre) 1999 Q03 The number of integrating factors of the non- exact differential equation 2 xy y x is– English · UP PCS (Pre) 2003 Q04 The differential equation: (ay2 + x + x8) dx – (y8 –y+bxy) dy = 0 is exact if: English · UP PCS (Pre) 2006 Q05 The differential equation 2xy dx+(ax2 +3y2) dy = 0 is exact, if a is equal to English · UP PCS (Pre) 2009 Q06 The equation (αxy3 + y cos x)dx + (x2 y2 + βsinx) dy = 0 is exact for English · Bihar (TRE 1.0) -2023