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Q.

If the system of equations of 3x–2y+z=0, kx–14y+15z=0, x+2y+3z=0 has non trivial solution then k=

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a

29

b

26

c

23

d

19

answer is A.

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Detailed Solution

|3−21k−1415123 | = 0 ⇒ −216+6k−30+2k+14=0 ⇒ 8k=232 ∴k=29

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