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A2 Rates/Differentiation


Shantae P
Posts: 24
Legend A2 Maths, A2 Chemistry, A2 Biology, LSC Queensbury
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(@splum5)
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Joined: 2 years ago
Please help!!
4B90D83C F5BC 48B0 BD6C 9D9D083902F0
 
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Zeeshan Ahmed
Posts: 715
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(@zeeshan)
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If the side of the cube is x, that means you can make 2 equations for the cube

V = x^3 and S = 6x^2.

So now, when they ask for dx/dt, just fill in the chain rule: dx/dt = dx/dS * dS/dt

And same for dV/dt.

Part (c) is an integration question which you most likely haven't learnt yet

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