Archive for category Complex Numbers

A12 – Complex Numbers 4

Graphing wedges and circles (8.20) Advertisements

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A11 – Complex Numbers 3

De Moivre’s theorem 1 (2.18) De Moivre’s theorem 2 (11.48) Euler’s identity (12.26) Exponential form 1 – starts at 7:30 Exponential form 2 (10.12) Finding the roots of complex numbers –exponential form (11.53) nth roots – trigonometric form (8.15) More roots – trigonometric form (9.42) Trigonometric application of complex numbers (11.11) Why complex numbers are used in electronics (16.12)

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A10 – Complex Numbers 2

Cartesian form to polar form 1 – from Cartesian form (a+ib) to Polar form (3.31) Cartesian form to polar form 2 (2.04) Polar form 3 (4.38) Polar to Cartesian (2.18) Multiplying and dividing in polar form 1 (3.27) Multiplying and dividing in polar form 2 (3.17)

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A9 – Complex Numbers 1

Introduction to i (5.20) Powers of i (6.21) The principal (positive) square root of -1 (6.45) Roots of negative numbers (4.04) Real and imaginary parts (4.44) Adding complex numbers (4.39) Subtracting complex numbers (3.51) Multiplying complex numbers (5.32) Complex conjugate (4.01) Dividing complex numbers (4.58) Complex roots of a quadratic – using the quadratic formula (10.15) Quadratic with complex coefficients (9.01) Plotting (5.54) Graphing and the modulus 1 – the modulus […]

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