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Find the equation of the tangent to the curve y=x^3-4x^2+2 at the point (3,-7)

y=x 3 -4x 2 +2A tangent to a curve at a specific point along the line will have excatly the same gradient as the curve at that point. For example if the point was (0,0) the tangent would just be a horizontal...
DW
Answered by Daniel W. • Maths tutor
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A sample of pure gold has a density of 19300 kgm^-3. If the density of a gold nucleus is 1.47x10^17Kgm^-3, discuss what this implies about the structure of the gold atom. [4 marks]

To gain all of the marks, 4 different points must be made. To begin, state what is obvious: The density of the gold nucleus is much greater than the density of the gold atom. The next step is to discuss what...
RL
Answered by Rebecca L. • Physics tutor
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How do I structure an essay?

One useful way of structuring an essay is to divide it into sections as follows: Introduction: This should use words from the question and briefly summarise what you will argue/examine/discuss throughout the...
ME
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How do you answer a long answer question on how buffer systems work?

1) First, state how the buffer is prepared by saying that an excess of acid reacts with a base (include the equation for this reaction) b) Write the overall equation of the buffer system (remember to show it...
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Answered by Ritvij S. • Chemistry tutor
3701 Views

How to effectively structure a comparative essay?

When comparing two texts it is important to write out a rough plan, as it can often be confusing and all over the place when dealing with two texts and not planning properly! The comparative essay will usual...
NM
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