Search our library of homework questions

Top answers

All subjects

All levels

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

7199 Views

What is the difference between a FOR loop and WHILE loop and how do I write them?

A FOR loop runs for a certain amount of iterations before ending; the amount of loops is specified in the condition. A WHILE loop runs until a condition is met, so if the condition is never met then the W...

Answered by Sam B. • Python tutor

1897 Views

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

1792 Views

I’m having some trouble understanding functions. Mainly concerning how to know what the input and outputs are. Could you give me an explanation?

The best way to think about a function is to see it as a machine. Your input is the item you put into the machine, the function is what the machine does, and then when you get out of the other side is you...

Answered by Chelsie J. • Maths tutor

3249 Views

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

2444 Views