1,333 prompts matching "Why a rational number added to an irrational one stays irrational"
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Worked example: solve the simultaneous system y = 2x - 1 and y = x^2 - 4
I am in SS 3. Show me a full worked example solving the linear-quadratic system y=2x-1 and
Worked example: expand (2-x)^5 using Pascal's triangle
I am in SS 3. Show me a full worked example expanding (2-x)^5 using Pascal's triangle, lay
Structured question: simplifying a surd raised to a fractional index
I am in SS 3. Give me a structured question simplifying an expression that combines a surd
Structured question: solving a trig equation involving a double angle
I am in SS 3. Give me a structured trigonometric equation question involving sin(2x) or co
WAEC Prep: The difference between pre-multiplying and post-multiplying by a matrix
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WAEC Prep: The identity matrix, and what it does in a product
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WAEC Prep: The determinant of a 2 by 2 matrix as ad minus bc
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WAEC Prep: Expanding a 3 by 3 determinant along the first row
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WAEC Prep: Setting out the coefficient determinant for two simultaneous equations
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WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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WAEC Prep: The minor of an entry of a 3 by 3 matrix
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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: Writing two simultaneous equations as a single matrix equation
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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WAEC Prep: Mass, and how it differs from weight
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WAEC Prep: The resultant of two forces acting at the same point
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WAEC Prep: The magnitude of the resultant of two forces inclined at an angle
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WAEC Prep: The triangle of forces for three forces in equilibrium
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WAEC Prep: Friction, and the direction in which it acts
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WAEC Prep: Calculating a moment as force times perpendicular distance
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