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Let f be a function of a real variable into the real domain : f(x) = x^2 - 2*x + 1. Find the roots and the extremum of the function f.

Let f be a function of a real variable into the real domain : f(x) = x^2 - 2 x + 1. Find the roots and the extremum of the function f.i) Root finding The function f is a 2nd degree polynomial. The root findi...
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Answered by Matteo M. • Maths tutor
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My paper asks me to write a formal letter for a job application. How should I structure it and what should it include?

As part of the written exam, students are often asked this. This is most likely to be in the form of a formal job application letter. Possible points to cover during lesson:(1) Structure: - Where to put the ...
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Answered by Hannah D. • Spanish tutor
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What are your two greatest weaknesses?

When answering a question like this, interviewers are not looking for the exact right answer but your non-cognitive ability to reflect and see potential for improvement. An answer such as my test scores or m...
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Express '2x^2 + 8x + 30' in the form 'a(x+b)^2 + c'

b = B/2A = 8/(2x2) =8/4 = 2 c = C-((B^2)/4A) = 30-((8^2)/(4x2)) = 30-64/8 = 30-8 = 22 => 2x^2 + 8x + 30 = 2(x+2)^2 + 22
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Answered by Charles C. • Maths tutor
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Assess how important purges were in allowing Stalin to retain control of Russia 1930-1940?

The command word in this question is 'assess'. That means they want you to compare the purges with other developments occurring throughout the period and reach a final judgement : for example, arguing the pu...
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Answered by Lachlann H. • History tutor
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