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Let k(x) = f(x)g(x) then k'(x) = limit as h --> 0 of: (h(x+h)-h(x))/h = lim (f(x+h)g(x+h) - f(x)g(x))/h

We can factorise the numerator as:
f(x+h)g(x+h) - f(x)g(x) =f(x+h)g(x+h) -g(x)...

32x + 7

The subjunctive in Spanish is not a tense but rather a 'mood', which we do not have in English, and it is triggered by certain structures or subject matters. We can use either the present subjunctive or t...

Liebe Clara, 

Danke fur deinen letzten Brief. In der Schule ist alles gut, aber zu Hause hab ich ich heute etwas geaergert. Du weisst ja, wie immer, nimmt Nina sich einfach das aus meinen Kleidersc...

Mols is a measure of the amount of a molecule present, chemically defined as 1/12th of an atom of carbon 12

Mols = Mass (g) / Molecular Mass (gmol^-1)