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What we should know is that the root 3+4i is a complex number that looks alot like a+bi.
We can say : rt(3+4i) = a+bi (Where we dont know what a & b is..yet)
and when we square both side...
This is an example of an integral that uses trigonometric substitutions, which is quite a common theme for A-level further maths questions. Firstly, notice the denominator is quite unpleasant, so to make ...
In this kind of exersise it is easy to use Viète's formula for quadratic equations: Let: a+b = S ab=P then x2 -Sx + P=0 In our case, S=6 and P=14 by multiplying the fractions we get: (aAMAnswered by Andreea-Lorena M. • Further Mathematics tutor2544 Views
Taking a sample survey is quicker, cheaper and easier to carry out than a census.
An arithematic progression has terms in a sequence such that the difference between any two consecutive terms is a constant and is given by a common difference, say, d. If first term in the progression is...
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