awrt 2.68 A1 oe (2) (c) An attempt to use the quadratic M1 formula (usual rules) Attempt to simplify their in M1 terms of i,. e.g. i or i A1 oe So, . (3) (d) Note that the points are and The point plotted correctly on the Argand diagram with/without B1 label. The distinct points and plotted correctly and symmetrically about the on the Argand B1 (2) x-axis diagram with/without label. 8 Question Scheme Notes Marks Number 3. (a) A = (i) A2 = A correct method to multiply out two matrices. Can be = M1 implied by two out of four correct elements. Correct answer A1 (2) Enlargement; B1; (ii) Enlargement; scale factor 3, centre scale factor 3, centre (0, 0) B1
awrt 2.68 A1 oe (2) (c) An attempt to use the quadratic formula (usual rules) M1 Attempt to simplify their in terms of i,. e.g. i or i M1 So, . A1 oe (3) (d) Note that the points are and The point plotted correctly on the Argand diagram with/without label. B1 The distinct points and plotted correctly and symmetrically about the x-axis on the Argand diagram with/without label. B1 (2) 8 Question Number Scheme Notes Marks 3. (a) A = (i) A2 = = A correct method to multiply out two matrices. Can be implied by two out of four correct elements. M1 Correct answer A1 (2) (ii) Enlargement; scale factor 3, centre Enlargement; B1; scale factor 3, centre (0, 0) B1
fp1_all-past-papers.docx