Ex 4.1, 7 - Chapter 4 Class 12 Determinants (Important Question)
Last updated at Jan. 22, 2020 by Teachoo
Last updated at Jan. 22, 2020 by Teachoo
Transcript
Ex 4.1, 7 Find values of x, if (i) |■8(2&4@5&1)| = |■8(2x&4@6&x)|Calculating |■8(2&4@5&1)| = 2(1) – 5(4) = 2 – 20 = – 18 Calculating |■8(2x&4@6&x)| = 2x(x) – 6 × 4 = 2x2 – 24 Now |■8(2&4@5&1)| = |■8(2x&4@6&x)| Putting values −18 = 2x2 – 24 2x2 – 24 = −18 2x2 = −18 + 24 2x2 = 6 x2 = 6/2 x2 = 3 x = ± √𝟑 Hence, value of x is ± √3
Chapter 4 Class 12 Determinants
Example 14 Important Deleted for CBSE Board 2021 Exams only
Example 15 Important Deleted for CBSE Board 2021 Exams only
Example 16 Important Deleted for CBSE Board 2021 Exams only
Ex 4.2, 7 Important
Ex 4.2, 8 Important
Ex 4.2, 11 Important
Ex 4.2, 12 Important
Ex 4.2, 13 Important
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Ex 4.2, 15 Important
Example 18 Important
Ex 4.3, 2 Important
Ex 4.3, 3 Important
Example 24 Important
Example 26 Important
Ex 4.5, 10 Important
Ex 4.5, 15 Important
Ex 4.5, 18 Important
Ex 4.6, 13 Important Deleted for CBSE Board 2021 Exams only
Ex 4.6, 15 Important Deleted for CBSE Board 2021 Exams only
Ex 4.6, 16 Important Deleted for CBSE Board 2021 Exams only
Example 32 Important Deleted for CBSE Board 2021 Exams only
Example 34 Important Deleted for CBSE Board 2021 Exams only
Misc. 2 Important Deleted for CBSE Board 2021 Exams only
Misc 11 Important Deleted for CBSE Board 2021 Exams only
Misc. 15 Important Deleted for CBSE Board 2021 Exams only
Misc. 16 Important
Misc 19 Important
Chapter 4 Class 12 Determinants
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