Linear Algebra | Determinant | Solving for 'lambda'

In this I solve for 'lambda' to find a determinant of the provided matrix equal to zero.
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[@TORARROW]

ya saved me...i am hours away from my tutorial and this was my question lol. Thank you!!

[@elsharaawy8662]

how about the same problem but with two variables in the first row only. Say,the first row has lambda and pi as entry one and two, then the rest of the entries are digits. How would u solve that?

[@elvispresley1196]

I'm not familiar with lambda in math problems. When do they start showing lambda in math problems?

[@Spectonimous]

Elvis Presley Differential equations and maybe calc 2

[@mohammadghaus2105]

12 or engineering upon you