1,323 prompts matching "Why completing the square always works"
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Spot My Mistake: The vector from A to B as the difference of two position vectors
Act as my SS3 Further Mathematics tutor. Work a question on the vector from A to B as the
Learn: Subtracting one vector from another
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Practice: The dot product as the magnitudes times the cosine of the angle
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Worked Example: Testing two vectors for perpendicularity
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Learn: The angle between a vector and one of the axes
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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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Learn: The real and the imaginary parts of a complex number
You are my personal SS3 Further Mathematics tutor. Teach me the real and the imaginary par
Spot My Mistake: Dividing one complex number by another using the conjugate
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Worked Example: Squaring a complex number
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Practice: The sum of a complex number and its conjugate
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Practice: The argument of a complex number in the second or third quadrant
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Practice: The addition of complex numbers shown on an Argand diagram
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Spot My Mistake: Deriving a multiple angle formula from de Moivre's theorem
Act as my SS3 Further Mathematics tutor. Work a question on deriving a multiple angle form
Learn: The cube roots of unity
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Learn: Choosing between the product rule and the quotient rule
You are my personal SS3 Further Mathematics tutor. Teach me choosing between the product r
Worked Example: Differentiating a bracket raised to a power
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Spot My Mistake: Classifying a stationary point by the second derivative
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WAEC Prep: Why integration undoes differentiation
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Spot My Mistake: Finding the constant of integration from a given point
Act as my SS3 Further Mathematics tutor. Work a question on finding the constant of integr