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How do I solve a simultaneous equation in two variables when they have with different coefficients?

First have a look at the coefficients of each variable. You're trying to spot if the coefficient of one variable is a multiple of the coefficient of the other in the second equation. If so, you can multi...

Answered by Ryan W. • Maths tutor

3644 Views

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

3386 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

6556 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

8798 Views

‘The play Hamlet shows a disturbing fascination with death.’ Using your knowledge of the play as a whole, show how far you agree with this view of Hamlet.

Taking this sample A-level question on Hamlet, the most important thing to do is to establish a structure for the answer. The core of all good literary criticism is a coherent argument that moves...

Answered by Cameron Y. • English tutor

5663 Views