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Given that y=x^3 +2x^2, find dy/dx . Hence find the x-coordinates of the two points on the curve where the gradient is 4.

First of all we are asked to differentiate the function. This can be easily done by multiplying the coefficient of x by its exponent, and then decreasing the exponent by one. Therefore, dy/dx=3x^2+4x We a...

IH
Answered by Imran H. Maths tutor
16194 Views

Explain the roles of ATP and calcium ions in muscle contraction. (4 marks)

The hydrolysis of ATP provides the energy necessary to break the cross-bridges formed between actin and myosin heads. The hydrolysis of ATP is also used to provide the energy for the power stroke, which i...

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Answered by Rachel H. Biology tutor
25413 Views

The numbers 6B and 12 are displayed in hexadecimal form. Convert them into binary form and perform binary addition to find the sum. Convert your answer back into hexadecimal. Show your workings.

The first step is to work out what 6B and 12 are in binary. Starting with 6B, we need to find a four-bit representation of both 6 and B. 6, converts straight to its binary form, simply by adding 1s...

BC
Answered by Ben C. Computing tutor
3704 Views

How do I approach this question? Our teacher never explained it in class!

Any question in physics will boil down to a simple conservation law, even at the relatively difficult A level exams.

Basically, in order to successfully solve this question, you need to identify 3 ...

FP
2081 Views

Explain how a utilitarian would make a moral decision (5)

Utilitarianism is a consequentialist normative ethical theory which prescribes the moral action to be the one that maximises utility. It is unconcerned with the nature of the act itself but rather with it...

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Answered by Jake S. Philosophy tutor
11714 Views

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