
02368969
j
2006f.03750
Kumar Ray, Asok
Condition that a second degree equation in two variables represents a pair of real lines.
Math. Educ. 39, No. 3, 161165 (2005).
2005
Kumar Pankaj, Siwan, Bihar, India; I.M. Prasad, Siwan, Bihar, India
EN
G70
H30
linear factors
We know the condition that a second degree equation in two variables represents a pair of lines in a plane. But then the two lines may be real or complex. The present paper finds the condition such that the given equation represents two real lines. This is not to be found in any treatise.