1,333 prompts matching "Discriminant and the nature of roots"
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WAEC Prep: Writing a force as a vector in i and j form
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Spot My Mistake: The equilibrium condition written in vector form
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Quiz: Subtracting one complex number from another
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Practice: Equating real and imaginary parts to find two unknowns
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Spot My Mistake: Dividing one complex number by another using the conjugate
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WAEC Prep: The argument measured in radians
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WAEC Prep: The polar form written as r cos theta plus i r sin theta
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WAEC Prep: Converting a complex number from polar form into the form a plus bi using tables
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WAEC Prep: De Moivre's theorem used with a negative index
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Spot My Mistake: Deriving a multiple angle formula from de Moivre's theorem
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Explain Back: Forming a quadratic equation with given complex roots
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WAEC Prep: Why the limit is taken as h tends to nought
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Practice: Differentiating sin x and cos x
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WAEC Prep: The product rule applied to three factors
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WAEC Prep: Simplifying the answer after using the quotient rule
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WAEC Prep: The product rule for differentiation
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WAEC Prep: The chain rule applied twice in one problem
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WAEC Prep: A stationary point at which the second derivative is nought
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Spot My Mistake: Classifying a stationary point by the second derivative
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WAEC Prep: Integrating a derivative to recover the original function
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