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how do you do binomial expansion when the power is a negative

There is a simple equation, similar to the normal binomial expansion, thats easy to remember once youve used it a few times.

(1+x)n=1+nx+{[n(n-1)]/2!}x2+{[n(n-1)(n-2)]/3!}x

SM
Answered by Sarah M. Maths tutor
10290 Views

What is the cognitive approach to explaining depression?

Cognitive approaches look at the meditional processes that govern behaviour. One cognitive explanation of depression was proposed by Aaron Beck. This is the 'negative traid', which invovles having negativ...

SP
Answered by Sophie P. Psychology tutor
3992 Views

Please can you explain the labour market?

So, in the labour market there are firms that demand labour to be able to produce the goods that they sell, and there are workers who supply labour in order to earn a wage. First let’s think about the wor...

HC
Answered by Hugo C. Economics tutor
2123 Views

How can I get a better grade in the exam?

Better grades at English literature A level can be attained by hitting all the criteria for marking. Usually this involves including context- when was the text written and what was happening at the time, ...

JD
3751 Views

Describe ritornello form and give an example of where it is used

Ritornello form was used most predominantly in the Baroque era. The term ‘ritornello’ translates as ‘little return’ and is a passage of music that reoccurs throughout a piece; these passages are separated...

EM
Answered by Emelye M. Music tutor
19492 Views

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