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y=x^2

if y = a*x^b

then dy/dx = ba*x^(b-1)

therefore

dy/dx = 2*x

• The behaviour of the solution depends on the value of the discriminant, D = b² – 4ac, (aptly named as it allows you to discriminate between solutions)

• ...

(I assume I can use the whiteboard in an actual lesson/interview)

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