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Firstly, let (x-2)/((x+1)(x-1)2) = A/(x+1) + B/(x-1)+C/(x-1)2, where A,B and C are to be calculated.
Then, multiply both sides of the equation by (x+1)(x-1)2<...
The ratio given tells us that our paint mixture of 18 litres consists of 3 + 2 = 5 parts.
Each part therefore consists of 18/5 = 3.6 litre...
Every term needs to be differentiated in terms of x:
For the x3 term, differentiated it becomes 3x2 (multiply the whole term by the initial p...
So, the easiest way to start thinking about this is by looking at straight lines. The gradient of a straight line is just its slope, which is the difference in the y values between any two points...
gradient =7 y intercept = 7
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