1.

If the lines ¯r=¯a+λ(¯bׯc) and ¯r=¯b+μ(¯cׯa) intersect each other then the condition is

Answer»

If the lines ¯r=¯a+λ(¯bׯc) and ¯r=¯b+μ(¯cׯa) intersect each other then the condition is




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