697 prompts matching "Checking a rationalised answer by decimal approximation"
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WAEC Prep: The inverse of a 3 by 3 matrix from its adjoint and its determinant
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WAEC Prep: Simultaneous equations with fractional coefficients solved by matrix
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WAEC Prep: The forces on a body suspended by a single string
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WAEC Prep: A rigid body held in equilibrium by four forces
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WAEC Prep: A knot held in equilibrium by three strings
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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WAEC Prep: Comparing two values from different normal distributions by z-score
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WAEC Prep: The probability that a normal variable exceeds the mean by more than one standard deviation
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WAEC Prep: The magnitude of a vector after multiplication by a scalar
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WAEC Prep: The dot product used to find the work done by a force
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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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Spot My Mistake: Dividing one complex number by another using the conjugate
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WAEC Prep: Differentiating a polynomial term by term
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Spot My Mistake: Classifying a stationary point by the second derivative
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WAEC Prep: Integrating a polynomial divided by x
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WAEC Prep: The area under a straight line checked by a trapezium
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WAEC Prep: Finding velocity by integrating acceleration
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WAEC Prep: A small percentage change estimated by calculus
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WAEC Prep: The greatest height reached by a projectile
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