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Here z is a complex number, and therefore, z = a + bi. Thus, our equation becomes (a + bi)^2 = i. Expanding the brackets we get a^2 + 2abi + (b^2)(i^2) = i. Since i is the squ...

A tritone is an interval between two notes in a diatonic scale that is exactly half an octave. It's characterised by the interval of a diminished fifth, or augmented fourth. As an example of a tritone, ta...

At A level you're usually expected to make reference to some levels of literary criticism in your writing- literary criticism is when concepts and ideas belonging to particular schools of thought and acad...

A really useful structure to use when writing an answer to a question is the PEEL model- Point, Evidence, Explanation, Link. Say for instance you're writing an answer to a question on how Steinbeck presen...

A metaphor is a technique that compares two (or more) things directly- i.e, without drawing attention to the comparison. For example- ´Claire rubbed her eyes and breathed deeply, her head a storm.´ The au...