1,326 prompts matching "What the formula gives when the discriminant is negative"
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Worked Example: Finding the unit vector in the direction of a given vector
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WAEC Prep: The distance between two points from their position vectors
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Spot My Mistake: The vector from A to B as the difference of two position vectors
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WAEC Prep: Showing a triangle is right-angled using the dot product
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Practice: Deciding whether a point lies on a given line
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Spot My Mistake: The equilibrium condition written in vector form
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WAEC Prep: The imaginary unit i, and why i squared is minus one
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Spot My Mistake: Dividing one complex number by another using the conjugate
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WAEC Prep: The conjugate of a complex number, and how it is written
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WAEC Prep: The locus of a complex number equidistant from two points
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WAEC Prep: Why the limit is taken as h tends to nought
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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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Worked Example: The area between a curve and the x-axis
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WAEC Prep: The distance travelled in the first five seconds
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WAEC Prep: The rate at which the height of a liquid rises in a cone
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WAEC Prep: The distance covered in the nth second
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WAEC Prep: The work done against gravity in raising a body
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Spot My Mistake: The sum of the first n terms of an arithmetic progression
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Worked Example: Finding the first term and the common difference from two given terms
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