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y = x*(x-2)^-1/2. Prove dy\dx = (x-4)/2*(x-2)^3/2

Firstly, when approaching a differentiation question you need to work out what method you need to use to solve it. As you can see there are two terms multiplied by one another (the 'x' term and the '(x-2) -1...
GR
Answered by Graham R. • Maths tutor
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How do I prepare effectively for a closed-booked exam?

Although this might seem obvious, my main piece of advice is to know your text really well. Make sure you have read it at least once more in addition to any group reading you might do in class to really fami...
BG
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Using logarithms solve 8^(2x+1) = 24 (to 3dp)

Using the laws of logs you can see that if you log both sides of the equation you get: (2x+1)*log(8) = log(24) Dividing both sides of the equation by log(8) you get: 2x+1 = log(24)/log(8) Then it is a simple...
GR
Answered by Graham R. • Maths tutor
17484 Views

Statistics: Dave throws a ball at a bucket. The probability the ball goes into the bucket is 0.4. Dave throws the ball four times. What is the probability that he gets it in twice?

When Dave throws the ball, it can either go into the bucket, or miss. The probability of the ball going into the bucket is 0.4 and each throw is independent of eachother so this probability is the same for e...
JW
Answered by Jack W. • Maths tutor
8879 Views

How do diffusion and osmosis work?

Imagine someone sprays a deodorant from across the room, eventually it will make its way over to where you are and you can smell it. Diffusion is the spreading out of particles resulting in a net movement fr...
AS
Answered by Atalie S. • Biology tutor
10700 Views