Condition for concurrent lines (Three lines aix+biy+ci=0 meet at one point iff this 3×3 determinant is)
jee-mainjee-advanced
Three lines aix+biy+ci=0 meet at one point iff this 3×3 determinant is zero.
What each symbol means
| Symbol | What it stands for |
|---|---|
| ai,bi,ci | Coefficients of the i-th line |
When to use this
Lines not necessarily pairwise non-parallel; determinant zero is concurrency test.