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The standard rule for integration is: integrate kx^n dx = kx^(n+1)/(n+1). However, if we try and integrate 1/x in this manner we get, x^0/0, i.e. 1/0, which is infinity. However, if we look at a graph of ...
Prices are: £40 per guest. Total cost reduced by 5% with over 60 guests.
First, we work out the cost of Nisha's suggestion.
£40 x 70 guests = 2800
To find 5% ...
The best way to solve a quadratic function is to put brackets into the equation.
Start with an example
Find x when y=0 for the function
y=x*2 + 5...
We recognise that this is in the form of a function within a function, i.e u= 3x - 2 is within the u^4 function, therefore here we will use the chan rule to differentiate the equation.
T...
Ok so we need to get 'y' by itself on the left hand side of equal sign. We will first try to remove the denominator by multiplying 'x' by (3+4y). This gives (3+4y)x = 1 - 2y.
We will then...
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