Math Chapter Wise question with answer

Q01 The equation x2 – 2y2 + 3z2 – 4xy + 5yz – 6zx + 8x – 19y – 2z – 20 = 0 represents a: English · UK SSSC LT 2020 Q02 In three dimensional geometry equation x2 +y2 =r2 represents a English · UP PGT-2016 (02-02-2019) Q03 The equation 2 2 2 2 2 2 0 ax by cz ux vy wz d + + + + + + = + + + + + + = + + + + + + = + + + + + + = one represen... English · UPPCS(Pre) 2000 PGT 2013 Q04 The equation a(x2 + y2 + z2)+2(ux+vy+wz) +d=0 where a ≠ 0, always represents a sphere, provided? English · PGT 2004 Q05 If the equation αx2 +βy2 +2z2 –2αx–4βy–40 = 0 represents a sphere, its radius is: English · UP PCS (Pre) 2001 Q06 If the equation x2 –y2 +z2 –4x+2y+6z+λ=0 Represents a cone, then the value of λ is equal to: English · UP PCS (Pre) 2002