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Solve ∫(x+2)/(2x^2+1)^3 dx

Since (x+2)/(2x 2 +1) 3 can't be easily simplified into a more straightforward integral, we have to rely on some more advanced integration methods. Before trying things like substitution, or integration by p...
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Answered by Jack M. • Maths tutor
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Explore the ways in which money and transaction shape identity in Great Expectations

Introduce your answer clearly and concisely. Address the question and outline your texts, making sure your line of argument is coherent. Dickens' Great Expectations is a text undeniably concerned with the id...
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Answered by Joshua L. • English tutor
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A curve is given by the equation y = (1/3)x^3 -4x^2 +12x -19. Find the co-ordinates of any stationary points and determine whether they are maximum or minimun points.

Stationary points - dy/dx =0dy/dx = x 2 -8x +12 ( differentiating- early a level skill). Solving x 2 -8x +12=0 gives x=6, x=2 (solving quadratics- gcse skill). Subbing these values back into the original equ...
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Answered by Joseph C. • Maths tutor
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Can you explain hydrogen bonding?

Hydrogen bonding is a type of dipole-dipole interaction (dipole being when a molecule has unequal sharing of electrons across a bond). It is a particularly strong type dipole-dipole interaction and can only ...
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Answered by Daniel D. • Chemistry tutor
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Describe and Evaluate the Multi-store model of memory (16 marks)

The multistore model of memory is a memory model which suggests that memory is composed of 3 stores: the sensory memory store, the short term memory store and the long term memory store. Each store is encode...
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Answered by Lauren D. • Psychology tutor
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