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Solve 29cosh x – 3cosh 2x = 38 for x, giving answers in terms of natural logarithms

Firstly, we need the equation to be in terms of one cosh argument if possible, which can be done by the identity cosh 2x = 2cosh²x - 1. Upon substitution and simplification we get 6cosh²

Answered by Jacob C. • Maths tutor

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Find the gradient of the tangent to the curve y=4x^2 - 7x at x = 2

First, we differentiate our equation using the power rule:dy/dx = 8x - 7This is the gradient of our tangent, to the original equation, at any point x. So, to calculate the gradient at x = 2, we substitute...

Answered by Luke A. • Maths tutor

4985 Views

(For: Theatre Text in Context - focused on: Epic Theatre/Brecht) What is that we need to leave out so we won't encourage illusion and to keep in so to encourage experience?

Let's try to find the answer of this question by looking at what Brecht wrote in 'The Street Scene', which is his approach to the model for epic theatre. To examine how epic theatre works he suggests that...

Answered by Faye R. • Drama tutor

1728 Views

a typical question would be a setof parametric equations y(t) and x(t), asking you to find dy/dx and then the tangent/normal to the curve at a certain point (ie t = 2)

this question is a great example as we have many different aspects of a level maths workng together into one.initialy you will use use chain rule to find dy/dx = dy/du * du/dx.then you will either keep th...

Answered by Thomas S. • Maths tutor

3227 Views

Compare the ways in which the writers of your texts portray the impact of science on social order

‘Frankenstein’ explores how science impacts the lives of individuals, while ‘Handmaid’s Tale’ approaches how science affects society through the lives of a few individuals. Shelley writes about how the mo...

Answered by Lucy M. • English Literature tutor

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