ECZ 2015 · GCE Paper 2 · Question 2 — Matrices
Question from ECZ 2015 · GCE Paper 2 · Question 2
(a) Given that B = 0-22-8, find
(a(i)) (-32)B,[1]
Verified working — step 1
Multiply EVERY element of B by -32.(a(ii)) the determinant of B,[1]
Verified working — step 1
B = 0-22-8.(a(iii)) B2.[2]
Verified working — step 1
B2 means B multiplied by B, row into column.(b) Solve the equation m2 - m - 5 = 0, giving your answer correct to 2 decimal places.[5]
Verified working — step 1
a = 1, b = -1, c = -5.The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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