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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
8556 Views

Solve the simultaneous equations (with a calculator)

x^2 + y^2 = 9 x + y = 2 1) Firstly look at the second equation which is the simplest and think how you can rearrange it to fit into the first equation: x + y = 2 can be rearranged to y = 2-x 2) y = 2-x can t...
EG
Answered by Emily G. • Maths tutor
18733 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
14679 Views

Analysing a short poem in order to get the highest marks

Poem analysis has several dimensions to it all of which you need to address in order to write an answer worthy of the top marking band. The first time you read through the essay try to do so aloud and withou...
JB
5482 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
5108 Views