1,334 prompts matching "Explain completing the square back to me"
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Worked Example: Forming the determinant Dy by replacing the second column
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Worked Example: Checking the solution of three equations by substitution
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Worked Example: The units of mass, and the SI unit
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Worked Example: The direction of the resultant of two forces
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Worked Example: Using the sine rule on the triangle of forces
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Worked Example: The probability of no events at all in a Poisson distribution
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Worked Example: The continuity correction when approximating a discrete distribution
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Worked Example: Testing two vectors for perpendicularity
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Worked Example: The powers of i, and the cycle they follow
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Practice: Differentiating x squared from first principles
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Worked Example: The quotient rule for differentiation
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Worked Example: Differentiating a bracket raised to a power
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Worked Example: Classifying a stationary point by the sign of the gradient either side
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Worked Example: The area between a curve and the x-axis
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Worked Example: Power as the rate of doing work
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Worked Example: Finding the first term and the common difference from two given terms
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Explain pre-multiplication and post-multiplication
I keep mixing up pre-multiplying and post-multiplying matrices. Use two 2x2 matrices A and
Find the inverse of a 2x2 matrix #1
Give me a 2x2 matrix like A=[[2,3],[1,4]] and ask me to find its inverse using the determi
Find the inverse of a 2x2 matrix #2
I am in SS 3. Give me a 2x2 matrix like A=[[5,-2],[3,1]] and ask me to find its inverse us