Differentiation 6 • Tangents & Normals • P1 Ex12F • 🤖

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Why at 9:03 wouldn't the square root of 9 be -3 as well as 3?

huxleybowles
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Do you have to write equation for tangent in this form, or can I jump straight to the equation?

naliinsuthakaran
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Hi sir, at 11;40 when you subtracted the 27 from 18 AND then added 2, wouldnt you do 18+2 and then do 27-20 due to BIDMAS so you would follow the rules of the order to do it in? pls help

TaiwoIbirinde
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how would you know these questions would need differentiation?

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