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How is the role of the British Prime Minister changing?

This is an example of an essay question that could be asked (with slight variation) for a paper on British Politics. An approach to the question will need to be twofold - firstly the content needs to be addr...
MF
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Differentiate 2e^(3x^2+6x)

Subsitute in u = 3x^2 + 6x and use chain rule to get dy/dx = dx/du x dy/dx to get dy/dx = 2(6x+6)e^(3x^2 +6)
NC
Answered by Nasser C. • Maths tutor
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Given that the binomial expansion of (1+kx)^n begins 1+8x+16x^2+... a) find k and n b) for what x is this expansion valid?

a) We compare the expansion given to the standard binomial expansion (remembering the powers of k).(1+kx) n =1+n(kx)+(n(n-1)/2)(kx) 2 +...As this is true for all x (for which the expansion holds), we can com...
GC
Answered by George C. • Maths tutor
5994 Views

Given that y=(sin4x)(sec3x), use the product rule to find dy/dx

First, recall the Product rule: f(x)=g(x)*h(x), f'(x)=h(x)*g'(x)+h'(x)*g(x)This reveals the next step, to find the derivatives of our two subsidiary functions(g and h) d/dx * (sin4x) = 4cos(4x) , and d/dx (s...
EF
Answered by Edward F. • Maths tutor
4591 Views

Explain a constraint to economic development and offer a policy prescription

Countries who are dependent on primary products often are constrained in achieving economic development. Such a dependency offers two distinct issues. Firstly, as demand and supply for commodities are price ...
EC
Answered by Edward C. • Economics tutor
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