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How do I a differentiate a cosine function?

The differential is the slope of the graph at any point. So if we imagine a cosine in our heads, it starts at a peak and goes down to a negative peak. So in terms of the gradient (or slope) it starts at 0 an...
KH
Answered by Kieran H. • Maths tutor
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what is the mood of "capiat" and why? (NB. this kind of question would be referring to a passage, so it depends on the sentence from the passage).

it is subjunctive because it is part of an indirect question.
NS
Answered by Nana S. • Latin tutor
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Define the derivative of a function f(x) and use this to calculate the derivative of f(x)=x^n for positive integer n.

f'(x)=lim(h->0) of [f(x+h)-f(x)]/h. In the case where f(x)=x^n, we have that f(x+h)-f(x)=h*nx^(n-1) + (h^2)*p(x) for a polynomial p(x), shown by binomially expanding f(x+h). Then dividing through by h and...
TD
Answered by Tutor302361 D. • Maths tutor
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What do I have to do when I answer an extract question for A Level History?

One crucial thing to remember, which is such a common mistake by students, is to remember it is an EXTRACT. The texts are not "sources", they are extracts from historians writing their take on the ...
Answered by • History tutor
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How does The Tragedy of Antony and Cleopatra represent power struggle in Act 1, Scene 1?

Scene 1.1 of Antony and Cleopatra depicts the struggle for power through both the lovers' relationship and the overarching political narrative of the play. In conflating personal and political life, the text...
Answered by • English tutor
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