OCR Subject Content Stage 1 learners Stage 2 learners DfE Ref. should… should additionally… Ref. 4.02c c) Understand and be able to use the notation: z, , , , , . Includes knowing that a complex number is zero if and only if both the real and imaginary parts are zero. The principal argument of a complex number, for uniqueness, will be taken to lie in either of the intervals or . Learners may use either as appropriate unless the interval is specified. In stage 1 knowledge of radians is assumed: see H240 section 1.05d. 4.02e Basic operations e) Be able to carry out basic arithmetic operations on B2 complex numbers in both cartesian and B5 forms. B6 In stage 1 knowledge of radians and compound angle formulae is assumed: see H240 sections 1.05d and 1.05l. Learners may use the results and 4.02f f) Convert between cartesian and modulus-argument forms. OCR Subject Content Stage 1 learners Stage 2 learners DfE Ref. should… should additionally… Ref. 4.02g Solution of g) Know that, for a polynomial equation with real B1 equations coefficients, complex roots occur in conjugate pairs. B3
OCR Ref. Subject Content Stage 1 learners should… Stage 2 learners should additionally… DfE Ref. 4.02c c) Understand and be able to use the notation: z, , , , , . Includes knowing that a complex number is zero if and only if both the real and imaginary parts are zero. The principal argument of a complex number, for uniqueness, will be taken to lie in either of the intervals or . Learners may use either as appropriate unless the interval is specified. In stage 1 knowledge of radians is assumed: see H240 section 1.05d. 4.02e Basic operations e) Be able to carry out basic arithmetic operations on complex numbers in both cartesian and forms. In stage 1 knowledge of radians and compound angle formulae is assumed: see H240 sections 1.05d and 1.05l. Learners may use the results and B2 B5 B6 4.02f f) Convert between cartesian and modulus-argument forms. OCR Ref. Subject Content Stage 1 learners should… Stage 2 learners should additionally… DfE Ref. 4.02g Solution of equations g) Know that, for a polynomial equation with real coefficients, complex roots occur in conjugate pairs. B1 B3