He recently taught us a way to remember an otherwise confusing determinant.
For a general second degree equation to represent a pair of straight lines, the condition is that the following determinant should be zero.
Remembered as:all handsome guys and hard-working girls {enforcing gender equality}
having bright future
go for careerShapers {direct marketing}
having bright future
go for careerShapers {direct marketing}
Nice one, เคนाँ?
We were taught similar but somewhat different line to remember .... "All handsome girls having boyfriend go for cinema"
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