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f(x) = x^3 + 3x^2 + 5. Find (a) f ′′(x), (b) ∫f(x)dx.

(a) To find the second derivative of f(x) we must differentiate f twice.the first derivative of f is f'(x)= 3x^2 + 6xthe second derivative therefore is f''(x)= 6x +6 (b) The integral of f(x) with respect to ...
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Answered by Samraj C. • Maths tutor
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Given an ordered array of integers "V" and a integer "Sum", write a function that would return "true" if it finds two numbers in V that add up to Sum, and "false" otherwise.

Because there is no unique solution to the problem the goal is to think different ways to approach an issue and ultimately opt for the best one in terms of complexity. There is an example of set of answers t...
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Answered by Fabio D. • Computing tutor
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Explain why Xenon had a lower first ionisation enthalpy than Neon. (3 marks)

Xenon is further down Group 8 of the Periodic Table than Neon, hence has its outermost electrons in higher energy shells further away from the nucleus. Therefore, there are more full intermediate energy leve...
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Answered by Alex M. • Chemistry tutor
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With examples, outline the three major tectonic boundaries and their associated features

There are three types of plate boundaries: convergent, divergent and transform. (Next to each explanation, include a simple diagram, making sure to label each key component.) Convergent Convergent boundaries...
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Answered by Caitlin T. • Geography tutor
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How would you find out whether a reaction is feasible?

For a reaction to be feasible at a given temperature, it must happen spontaneously, which means no extra energy needs to be put in for the reaction to occur. To find out whether a reaction is feasible, you c...
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Answered by Sarah G. • Chemistry tutor
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