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What is a good method to go about sketching a polynomial?

Let's do an example. Sketch: y=x^3 - 2 x^2 - x + 2. First we need to find out where the curve crosses the x and y axes. Look at the x axis first. We factorise the expression if we can. The best method to fac...
CJ
Answered by Charlotte J. • Maths tutor
3502 Views

How do I prepare for the Cambridge Law Test?

The Cambridge Law Test (CLT) is a one hour exam which candidates who have been called to interview must undertake. It will usually be sat on the same day as your interviews and is completely different from t...
PK
5128 Views

How do I structure a high level introduction?

Begin your introduction with a focused sentence that includes the text(s) you will be discussing, whilst stating how you will present your main argument. The following few sentences should outline the differ...
IW
10118 Views

How do electrical impulses control the regular beating of the heart?

The electrical beating of the heart is controlled by the cardiovascular control centre located within the medulla oblongata within the brain. Heart rate is controlled by the frequency of impulses being sent ...
WG
Answered by William G. • Biology tutor
3204 Views

Explain in terms of structure why giant ionic lattices have high melting and boiling points. [4]

Giant ionic lattices are regular structures, held together by ionic bonds. These ionic bonds are strong electrostatic forces of attraction between oppositely charged ions, acting in all directions. Energy is...
RN
Answered by Ruth N. • Chemistry tutor
25973 Views