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Find the value of (cos(x) + sec(x))^2 with respect to x when evauated between pi/4 and 0

first we have to see if this proble can be done via inspection. The power of two means that this can't be done straight away and the expression does not look like any trig identities. Expand it. through this...
EC
Answered by Eugene C. • Maths tutor
3680 Views

Integrate (sin(x))^6 - Further mathematics (De Moivre's theorem)

Recall that sin(x) = (e ix -e -ix )/(2i) and we can rewrite the integrand as {(e ix -e -ix )/(2i)} 6 Factor out {1/(2i)} 6 , which is -1/64, of the integrand (just to make algebra easier)Use binomial expansi...
AP
Answered by Akaash P. • Maths tutor
7283 Views

Tu passes un bon moment en vacances et tu décides d’envoyer un e-mail à ton ami pour lui raconter. Écris l’e-mail que tu lui enverrais.

Salut Sébastien,J’espère que ça va bien et que tu passes de bonnes vacances! Je suis avec ma famille au ski dans les Alpes. C’est génial! Il a y beaucoup de neige donc on a fait beaucoup de pistes. On a auss...
MS
Answered by Mariella S. • French tutor
8754 Views

To what extent did the legacies of European colonisation contribute to the Rwandan genocide of 1994?

The Rwandan genocide had traditionally been perceived by some historians such as Edward Herman and David Peterson as the result of a chaotic civil war, this view is further empathised by the United Nation’s ...
VO
Answered by Valuola O. • History tutor
2660 Views

Assess the strengths and weaknesses of using questionnaires to collect data. (20 marks, AS Level)

Questionnaires are commonly used by positivist researchers hoping to gain quantitative data. This can include the government or academic researchers who want to find clear trends about a certain population. ...
RJ
Answered by Roisin J. • Sociology tutor
9428 Views