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The key to answering this question is understanding that interest rates determine the cost of borrowing. If you borrow £1000 to buy a car at 10% annualised interest rate, your cost of borrowing would be l...
Integrating this expression is a simple trick. We use integration by parts. For this we need a function we can integrate and a function we can differentiate. We know how to differentiate ln(x) which is 1/...
Entropy is the level of disorder in the universe. The more disordered something is, the higher its entropy. Molecules in solids ae specifically arranged and vibrating, hence the level of disorder is low, ...
We can start with the identity sin2(x)+cos2(x)=1 If we divide through the equation by cos2(x), we get: sin2(x)/cos2(x) + cos2(x)/cos...
To get the required tangent equation we need its gradient and the coordinates of a point it passes through. We can then substitute it into the formula y - y1 = m(x - x1). 1. ...
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