1,334 prompts matching "find the coefficient of x^4 in the expansion of (1+3x)^7"
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Learn: The algebraic sum of moments when the senses differ
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WAEC Prep: The triangle of forces and concurrence taken together
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WAEC Prep: Using concurrence to locate an unknown line of action
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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WAEC Prep: Lami's theorem derived from the triangle of forces
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WAEC Prep: The statement of Lami's theorem
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WAEC Prep: The variance of a discrete random variable
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Learn: The expectation of a discrete random variable
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Practice: Using a binomial expansion to approximate a number
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WAEC Prep: The probability of at most r successes
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Practice: The probability of at least one success
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WAEC Prep: A Poisson distribution taken over a different length of interval
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Explain Back: Finding n and p from a given mean and variance
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WAEC Prep: Why the mean and the variance of a Poisson distribution are equal
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Learn: Finding lambda from a stated mean
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Quiz: The standard deviation of a Poisson distribution
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WAEC Prep: The shape and the symmetry of the normal curve
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Learn: The mean, median and mode of a normal distribution
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WAEC Prep: The z-score of a value that lies below the mean
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Worked Example: Finding a value from a given probability by working backwards
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