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(This is a common question in C4, the "hardest" module of the old A level)When differentiating we consider each term one at a time:Differentiating 3x² simply gives us 6x Differentiati...

The dominant 7th is commonly used in classical and jazz repertoire to lead back to the tonic, often as part of a perfect cadence. Referring to the dominant 7th chord itself, the 3rd rises by a semitone an...

It's important to remember that we generally use close reading to facilitate wider discussion about texts, not as an 'end in itself', so it is important to have a combination of both in your essays. The e...

Actions of Adrenaline
Heart
Cardiac Output = Heart rate X Stroke VolumeIncreases Total peripheral resistance = Increases Blood pressureOverall effect
Lungs  Dila...

There are three main types of unemployment: real-wage (classical), demand-deficient (cyclical), and equilibrium unemployment (which includes seasonal, frictional, and structural unemployment). Real wage u...