1,332 prompts matching "Solving an equation where the surd must be isolated first"
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Spot My Mistake: Reading a probability from the standard normal table
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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: Finding the mean or the standard deviation from a given probability
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Learn: The probability that a normal variable lies between two values
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WAEC Prep: The zero vector, and what it means
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WAEC Prep: A three-dimensional vector parallel to another
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Quiz: The direction of a vector as an angle with the x-axis
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Learn: The unit vectors i, j and k
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Worked Example: The triangle law of vector addition
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Learn: Subtracting one vector from another
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WAEC Prep: Showing a triangle is right-angled using the dot product
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WAEC Prep: The resultant force on a particle given in i and j form
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WAEC Prep: The imaginary unit i, and why i squared is minus one
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Worked Example: The powers of i, and the cycle they follow
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WAEC Prep: The argument measured in radians
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WAEC Prep: The modulus and the argument taken together
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Quiz: The argument of a complex number
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WAEC Prep: The conjugate shown on an Argand diagram
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