June 2016 14.75 marks] 12. ifa complete integral ofthe partial differential equation x(p+q)= zp;p- q- passes through the curve x =0,2 4y, then the envelope of t

June 2016 14.75 Marks] 12. Ifa complete integral ofthe partial differential equation x(p+q)= zp;p- q- passes through the curve x =0,2 4y, then the envelope of this family passing throughx =1 and y=1 has (a z=-2 (b) z2 (c) z v2 +2/2 (d) z-v2+2/2 June 2017 (4.75 Marks) ew Delhl-110016 88-00-22-1386 011-26537527 www.dipsacademy.com ad mnn