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Firstly, note that a stationary point can either be a local maximum, local minimum or point of inflexion. Now suppose you have a differentiable function (a graph which has a unique gradient/derivative at ...

The conditional tense is a bit like the future tense but with different endings. You use the stem of the verb and add on the conditional endings (the same as in the imperfect tense).

and example wo...

Use the factorisation method.

Step 1: Rewrite (x + __ )(x + __ ) = 0

Step 2: We need to fill in the blanks. The numbers we require are -2 and -9.

Step 3: We need the values of x, so t...

In Italian, the present indicative tense works much like the present tense in English. You first need to remember that Italian infinitives end in one of three ways (-ARE, -ERE, -IRE) and that are conjugat...

pH 8-14 (anything above pH 7 can be seen as alkaline)