Direct and inverse variation models [IB Maths AI SL/HL]

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We're so excited to be able to share our exams with you!

Cheers, Mitch
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A quick question, is this topic common in IB exams? Can i still get a 5 without actualy knowing how it works?

toufikalzabn
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Hi! Just wanted to ask, in the question about 5G, why did you do the equation as i = k/x^2, when the generic equation is k/x^n? What im trying to ask is where did the ^2 come from? It is the -2 in the question?
Thank you, your videos are my saving grace!!!!

Alex-idtv
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I have a question. When you have done I2 divided by I1, why do you do I2= I1/16? Thank you!

franxsxd