TS EAMCET · Maths · Matrices
Let and . If the trace of is and then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given: A=a355-1323-4 B=b144c1-31d Since, the trace of A is -4, so a-1-4=-4 ⇒a=1 Also, AB=-1017-3102528-83 ⇒1355-1323-4b144c1-31d=-1017-3102528-83 ⇒b-36+3c7+5d5b-138-c19+3d2b+243c-211-4d=-1017-3102528-83 ∴b-3=-1⇒b=2 6+3c=0⇒c=-2…
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