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Pure mathematics, statistics and mechanics as the A-level papers ask them. Placeholder content.
10 lessons · about 3.3 hours · Final year of school, preparing for A-level mathematics
The first lesson is free. The other 9 (3.3 hours in all) cost $8.42 bought together.
Or $1.70 a lesson one at a time, or $20.00 a month for Minimal — cheaper once you take more than ~11 lessons a month.
The vertex sits at x = −b/2a, which is why it slides sideways when you move b alone. The sign of a decides which way the curve opens, and its size decides how tight it is.
Solve .
Pick an option.
Free account. The course comes with you; nothing is charged for the first lesson.
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