Core Pure - Frequent Mistakes Flashcards

1
Q

What should you be thinking when you are asked to describe a transformation?

A

Have a think if there is an easier way

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2
Q

Those tricky question with rotation matrices with 2 answers: Explain?

A

Look at cast to find which one it needs to be

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3
Q

What is important to keep in mind with vectors (useful but awful)

A

Just test points

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4
Q

Why do I make mistakes when doing further partial fractions and transformation of roots of polynomials.
How do I fix this?

A

Roots of polynomials - keep it clear. If mistake is made rewrite whole thing or highlight it

Partial fractions - Never do 3 brackets in the head. Expand to of them and go from there

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5
Q

What can save a lot of time with tangents to polar coordinates?

A

Draw the diagram and be choosey with the values of θ that you select

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6
Q

How do you find the equation of a polar line which is tangent to the curve?

A

Find the cartesian equation then convert it into polar

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7
Q

What does sinhx differentiate to?

A

Coshx

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