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For this question, we have to integrate x2 multiplied by sin(x). For integrating a product, you must use a method called integration by parts. Without bogging ourselv...
First we will rewrite y so it is written with a power: y=1/x2-2x-1=(x2-2x-1)-1 Now let u=x2-2x-1 => du/dx = 2x -2 Writing y in terms of u: y=u-1 =...
A 15% increase means that the £80,000 represents 115% of the original value.
Therefore what we do is:
£80,000=£125% divided by 125
...
Answer has to be explained verbally. A full written proof can be given.
Answer has to be explained verbally. I can provide a full written proof.
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