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y = 1/x^2, differentiate y (taken from AQA 2018 past paper)

y = 1/x^2 is the same asy = x^-2 , now we can use the standard differentiation formula nx^n-1 to gety = -2x^-3y = -2/x^3
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What is the difference between the two literary devices an 'oxymoron' and a 'juxtaposition' and why are they used by writers?

Both devices display a similarity in the way that authors use them to emphasize a particular image or heighten an emotion. The difference lies in the fact that, with oxymoronic expressions, the contrast is c...
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Define the term empirical formula. Determine the molecular formula of a compound with the empirical formula C2H4O and a relative molecular mass of 176.0

Empirical formula is the simplest whole number ratio of atoms of each element in a compound. With the empirical formula and relative molecular mass, we can determine the actual molecular formula of a compoun...
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How would I write a strong introduction to a persuasive essay for my coursework?

For a persuasive essay at Higher level you want to begin with an introduction that will really capture the attention of the reader. You also want to set up the main argument of your essay without giving too ...
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Solve this simultaneous equation using the process of elimination: -6x - 2y = 14 3x - 2y = 5

To solve using elimination, you need to use the following four steps:Step 1: make sure that both of the equations have opposite x terms or opposite y terms. Currently neither of the x terms in the two equati...
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Answered by Emily B. • Maths tutor
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