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JEE MainMathematicsModerateMatrix and determinant
If the system of linear equation [IMAGE] and
[IMAGE] has a non-zero solution, then



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The system of linear equation has a non-zero solution, then
[IMAGE] On dividing by abc, we get Hence a, b, c are in HP




[IMAGE] On dividing by abc, we get Hence a, b, c are in HP




Source: Grass-G / M-15 Mathematics Paper 11 Nov.docx
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