Question Scheme Notes Marks Number 5. where and are constants. a b (a) Using the information in the question to form the matrix equation. Can be Therefore, M1 implied by both correct equations below. Any one correct equation. So, and M1 Allow Any correct horizontal line Any one of or A1 giving and Both and A1 (4) Finds determinant by applying M1 (b) A1 or M1 150 or ft answer A1 (4) 8 Question Scheme Notes Marks Number 6. B1 Substituting and their into M1 z* Correct equation in and with A1 x y i2 = -1. Can be implied. An attempt to equate real and M1 imaginary parts. Correct equations. A1 Attempt to solve simultaneous M1
Question Number Scheme Notes Marks 5. where a and b are constants. (a) Therefore, Using the information in the question to form the matrix equation. Can be implied by both correct equations below. M1 So, and Allow Any one correct equation. Any correct horizontal line M1 giving and Any one of or A1 Both and A1 (4) (b) Finds determinant by applying M1 A1 or M1 150 or ft answer A1 (4) 8 Question Number Scheme Notes Marks 6. B1 Substituting and their z* into M1 Correct equation in x and y with i2 = -1. Can be implied. A1 An attempt to equate real and imaginary parts. M1 Correct equations. A1 Attempt to solve simultaneous M1
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