A level maths: quadratics
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Last updated 4:15 PM on 11/10/22
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8 Terms
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quadratic equation
Ax^2 + bx + c = 0
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Quadratic formula
X = -b +- |b^2 -4ac| / 2a
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Quadratic graphs
- When a is positive, U shape, minimum
- When a is negative, n shape, maximum
- When a is negative, n shape, maximum
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Discriminant no roots
b^2 -4ac < 0
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Discriminant one repeated root
b^2 - 4ac = 0
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Discriminant two roots
b^2 - 4ac > 0
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domain
- Set of possible inputs for a function
- x-axis
- determines the bounds of the graph/function
- x-axis
- determines the bounds of the graph/function
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Range
- Set of possible outputs for a function
- y-axis
- determines the reach within the bounds of the domain
- y-axis
- determines the reach within the bounds of the domain