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This is a typical gradient question for A2 papers, as it requires use of the Product Rule and Chain Rule, as well as knowledge of e^x. Firstly, we can see that we will need to use the Product Rule as e^2-x a...

The ‘passato prossimo’ tense is the ‘near past’ and the most frequently used past tense in the Italian language, especially used in conversation. The passato prossimo is formed with the auxiliary ‘To be’ or ...

Every Spanish noun is either feminine or masculine and follows an article of the same gender. Masculine articles ​El / Un (masculine singular article) + masculine singular noun e.g. el chico Los ( masculine ...

Reversible reactions are reactions where the products are able to react themselves into the reactants. At the beginning of the reaction, there will be more reactants than products. But as the reaction goes o...

A simultaneous equation is an equation with 2 unknowns( X and Y). You will have 2 seperate equations. By adding or subtracting the 2 equations, eliminate one of the unknowns(X0). You are now left with one un...