1,334 prompts matching "Solving an equation with a fractional exponent on x"
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Practice: The direction of the resultant of several coplanar forces
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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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Worked Example: Using the sine rule on the triangle of forces
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Practice: Finding an unknown force from a closed polygon
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Practice: Limiting friction, and the greatest value it can reach
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Explain Back: The units of a moment, and why they are newton metres
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Explain Back: A probability distribution table for a discrete random variable
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Worked Example: Finding a particular term of a binomial expansion
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Practice: Using a binomial expansion to approximate a number
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Practice: The variance of a binomial distribution as npq
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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Practice: The components of a vector given its magnitude and direction
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Worked Example: The distance between two points in three dimensions
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Worked Example: The triangle law of vector addition
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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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Explain Back: The constant of integration, and why it appears
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Practice: The sign convention for displacement, velocity and acceleration
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