1,325 prompts matching "Find the value of k: quadratic with equal roots"
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Worked Example: Forming the determinant Dy by replacing the second column
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Worked Example: The identity that A times its adjoint gives the determinant times the identity
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Explain Back: Solving two simultaneous equations by multiplying by the inverse
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Practice: What a singular coefficient matrix says about the equations
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Explain Back: The forces acting on a body hanging from two strings
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Explain Back: The order in which the forces are drawn round the triangle
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Practice: Why the forces must sum to nought in two perpendicular directions
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Explain Back: Why the total moment about any point must be nought
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Explain Back: The binomial probability formula
I have just studied the binomial probability formula in my SS3 Further Mathematics class.
Explain Back: Testing whether data are Poisson by comparing mean and variance
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Practice: Using the normal tables when the z-score is negative
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Worked Example: The continuity correction when approximating a discrete distribution
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Worked Example: The distance between two points in three dimensions
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Practice: Deciding whether a point lies on a given line
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Explain Back: Raising a complex number to a power by de Moivre's theorem
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Worked Example: The quotient rule for differentiation
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Worked Example: The area between a curve and the x-axis
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Practice: The sign convention for displacement, velocity and acceleration
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Explain Back: The greatest height reached by a body thrown upwards
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