Top answers

Given that y = 5x^2 - 4/(x^3), x not equal to 0, find dy/dx.

y = 5x 2 - 4/x 3 1/x can be written as x -1 , which means our equation can also be written as y = 5x 2 - 4x -3 . dy/dx means that we need to differentiate y in terms of x. To differentiate an equation, we ne...
NL
Answered by Nick12 L. • Maths tutor
8753 Views

How to remain nuanced when writing a high mark band essay answer

The highest marks for English Literature essays require the student to not only be confident and effective when arguing his or her answer but also integrate a nuanced response to other possible answers. This...
JB
14982 Views

Should I focus on facts or themes when revising for an A or AS level history exam?

Revision for your A level history exam is always tricky as you find yourself trying to learn a great number of facts and statistics as well as the answers to the different themes of your period. The most imp...
JB
Answered by James B. • History tutor
5273 Views

What determines the elasticity of demand?

Price elasticity of demand is the responsiveness of demand to a change in price. (Definitions are key in economics!)1. The number and closeness of substitutes, if a good has many close (similar) substitutes,...
AB
Answered by Andrew B. • Economics tutor
5667 Views

A stationary radium atom decays, emiting an alpha particle. Why is the recoil speed of the nucleus small compared to the alpha particle?

Initially the momentum is zero. Due to conservation of momentum, the alpha particle and radium nucleus must gain equal but opposite momentum. The mass of the radium nucleus is greater than the mass of the al...
DD
Answered by Daisy D. • Physics tutor
11471 Views