1,333 prompts matching "Why a rational number added to an irrational one stays irrational"
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Spot My Mistake: The vector from A to B as the difference of two position vectors
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Worked Example: The position vector of the midpoint of AB
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Worked Example: Testing two vectors for perpendicularity
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Quiz: The vector equation of the line through two given points
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Spot My Mistake: The equilibrium condition written in vector form
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Worked Example: The powers of i, and the cycle they follow
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WAEC Prep: Adding three complex numbers
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WAEC Prep: Multiplying a complex number by a real number
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WAEC Prep: Dividing by a purely imaginary number
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WAEC Prep: The conjugate of a purely imaginary number
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WAEC Prep: The conjugate of a product of two complex numbers
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WAEC Prep: The modulus of a product of two complex numbers
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WAEC Prep: Multiplying two complex numbers in polar form
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Spot My Mistake: Deriving a multiple angle formula from de Moivre's theorem
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WAEC Prep: The square roots of a complex number
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Practice: Why complex roots of a real quadratic come in conjugate pairs
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Explain Back: Differentiating tan x
I have just studied differentiating tan x in my SS3 Further Mathematics class. Let me expl
Learn: Choosing between the product rule and the quotient rule
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WAEC Prep: The chain rule applied twice in one problem
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Worked Example: Differentiating a bracket raised to a power
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