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In a Poisson Distribution, there exists only one parameter, μ, the average number of successes in a given time interval. The mean and variance of the distribution are als...
This question involves factorising then simplifying an equation. Start with the original equation:(x-1)2 - (x-1) Take out a factor of (x-1)(x-1)(x-1-1)Simplify(x-1)(x-2)
Here is a question from the 2015 edexcel GCSE paper that was considered particulary challenging.
There are n sweets in a bag. 6 of the sweets are orange. The rest of the sweets a...
In my experience the sure fire way to prove trig identities is by doing the following:
1) Assess the question e.g. is it obvious you're going to need a double angle or addition formula, c...
Prerequisite for addition formula: https://www.youtube.com/watch?v=iHZmi2MHqWc
Proof of formula for sin(A+B): https://www.youtube.com/watch?v=BEETggUVMrY
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