Hi, I'm in first year engineering and I have trouble understanding where this formula comes from in determining the relationship between the coefficient of volume expansion and the coeff of linear expansion.(adsbygoogle = window.adsbygoogle || []).push({});

dV=(dV/dL)*dL = 3L^2*dL

now i know that they changed the dV in the brackets to dL^3, but then I don't understand how dL^3/dL became 3L^2? Is there a part of calculus I am missing? does it have to do with a rate of change divided by a rate of change?

Thanks!

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# How does these two equations relate?

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