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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.

Answered by Eugene C. • Maths tutor

3336 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)}⁶Factor out {1/(2i)}⁶, which is -1/64, of the in...

Answered by Akaash P. • Maths tutor

6364 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 a...

Answered by Mariella S. • French tutor

7898 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...

Answered by Valuola O. • History tutor

2284 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 populatio...

Answered by Roisin J. • Sociology tutor

8618 Views