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Why does integration by parts work?

Recall the product rule for differentiation: the derivative of uv is equal to u'v+uv'.If we use the fact that integration reverses differentiation (so the integral of f' is f), then we calculate that uv is e...
TB
Answered by Thomas B. • Maths tutor
5130 Views

How influential are pressure groups in the USA

Pressure groups have been very influential in the USA because they are able to shape debate, shape agenda and determine outcomes. However others have argued that party and voters have more influence than pre...
SH
14262 Views

Asteroid of mass 10^16 kg is travelling in the equatorial plane of Earth. It hits the surface at 45°. After the impact the day shortens by 1% (15 mins). How fast was the asteroid - comment? Neglect effects of atmosphere. Consider only inelastic collision.

Key idea - total angular momentum of the system is conserved. Before the collision: angular momentum of earth is given by L E =I w E , here w E is the angular velocity of Earth and I is its moment of innerti...
JK
Answered by Jiri K. • Physics tutor
2606 Views

How are the characters from at least two literary works representational of people from the time and place in which they were written?

(for the sake of this example, I will focus on one text - The Great Gatsby) Characters are moulded to embody the context of the novel in terms of ideals, standards and norms, creating vehicles for providing ...
CH
5517 Views

Calculate the number of moles of carbon dioxide molecules in 11 g of CO2.

Use equation: mole=mass/mr Calculate Mr of CO2 = 44Moles= 11g/44= 0.25 moles
MR
Answered by Mujahid R. • Chemistry tutor
6756 Views