The C3 A-level mathematics module was simple! I was expecting a challenge, and there were some smart questions, but overall the test was surprisingly passive. Not to be extremely harsh but, I hope everyone else found it quite challenging so that the grade-boundaries are not too high: I expect I may have lost a couple of marks somewhere.
Most difficult question
This question was probably the most challenging — you had to think a little to substitute x back into the equation.
- Initial definition of x
- Find dx/dy using the chain rule
- dy/dx is 1/dx/dy
- Replace y using x
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