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The finite region S is bounded by the y-axis, the x-axis, the line with equation x = ln4 and the curve with equation y = ex + 2e–x , (x is greater than/equal to 0). The region S is rotated through 2pi radians about the x-axis. Use integration to find the

formula for volume of solid generated = 2pi x integral between limits of y²expand ( e^x + 2e^-x)²= e^2x+4+4e^-2xintegrate e^2x+4+4e<...

Answered by Kit T. • Maths tutor

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How do I structure essay questions? For example: “What is the most important theme in the book/film?”…

Sample essay planIntro: Summarise book/film in 1 sentence Identify 3 or 4 possible themes and state that you will analyse them in the essayMain body: 3 or 4 paragraphs (1 per theme) Identify 1 or 2 exampl...

Answered by Jessica T. • French tutor

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Please explain the three types of data you will need to know for A-Level Psychology. Give examples of each.

Nominal data is data that is categorised. For example, what pet do you have: Dog, cat, otherOrdinal data is data that can be put in order. For example, Jim scored 35 on a test and Joe scored 16 so Jim is ...

Answered by Maya B. • Psychology tutor

2626 Views

Integrate the function xsin(4x^2) with respect to x, using the integration by substitution method.

Heres our integral: int(xsin(4x²)dx)The first decision to make is what to use as our substitution. We're going to go for the term tied up in the sine function: 4x²Set u = 4x²

Answered by Benjamin C. • Maths tutor

4200 Views

Explain what is meant by the term placebo, and how a placebo would be utilised in a clinical trial of a novel pain relief medication

A placebo is a control method to account for perceived effects of taking a medication. This is because patients often report that they feel a difference from taking a medication, irrespective of whether i...

Answered by Ryan A. • Biology tutor

7171 Views