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How do you determine the nature of a graphs stationary point? e.g y = 1+2x-x^2

We have our function of y = 1+2x-x² The gradient of a stationary (or turning) point is 0, in essence a peak or a trough. In order to determine the gradient, we need to differentiate our ...

Answered by Joseph A. • Maths tutor

11940 Views

What does the character 'Cyrano' symbolise in Cyrano de Bergerac and why is this important in the socio-historic context of the play?

Cyrano first and foremost symbolises the French spirit, or 'l'esprit français'. He represents the fighting spirit of France, with his nobility and honour. He is skilled with both his words and in battle -...

Answered by Sophie P. • French tutor

3598 Views

Compare and contrast the causes of Type 1 (insulin-dependent) and Type 2 (noninsulin-dependent) diabetes mellitus

Type 1 diabetes mellitus occurs when the body's immune system attacks beta cells within the Islets of Langerhans, in the pancreas. The immune system recognises pancreatic self-antigens as foreign and begi...

Answered by James L. • Biology tutor

8129 Views

Why did the English Civil War start?

The English Civil Wars started due to a combination of long and short term factors. In the short-term, the war can be seen to be triggered by an immediate breakdown in the relationship between the King, C...

Answered by Marius S. • History tutor

11353 Views