Course review

1.2 Number and algebra - AHL content

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Learning objective

AHL 1.9 (HL)—Logarithm laws

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• Use logarithm laws for products, quotients and powers. • In examinations, logarithm bases are 10 or e.

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Learning objective

AHL 1.10 (HL)—Rational exponents

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• Simplify numerical and algebraic expressions with rational exponents. • Include negative and fractional powers.

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Learning objective

AHL 1.11 (HL)—Infinite geometric sequences

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• Find sums of infinite geometric sequences. • Connect convergence to limits, fractals and Markov chains.

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Learning objective

AHL 1.12 (HL)—Complex numbers

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• Use i where i^2=-1 and Cartesian form z=a+bi. • Calculate sums, differences, products, quotients and powers of complex numbers. • Use Argand diagrams and complex roots of real-coefficient quadratics with negative discriminant.

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Learning objective

AHL 1.13 (HL)—Complex forms and applications

New

• Use polar form z=r(cos theta+i sin theta)=r cis theta and Euler form z=re^(i theta). • Convert between Cartesian, polar and exponential forms. • Use products, quotients and integer powers; roots are not required. • Interpret complex operations geometrically and model sinusoidal phase shifts.

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Learning objective

AHL 1.14 (HL)—Matrices

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• Use matrix terminology, order, equality, addition, subtraction, scalar multiplication and multiplication. • Know identity/zero matrices, determinants and inverses; hand calculation is limited to 2x2 inverses/determinants. • Write systems as Ax=b and solve with inverse matrices; apply matrices to coding, decoding and systems.

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Learning objective

AHL 1.15 (HL)—Eigenvalues and eigenvectors

New

• Find eigenvalues/eigenvectors and characteristic polynomial for 2x2 matrices. • Diagonalize 2x2 matrices with distinct real eigenvalues. • Use M^n=PD^nP^-1 for powers and applications such as population movement or predator-prey models.

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