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How exactly does integration by parts work?

Integration by parts can be considered as the inverse method of differentiation using the product rule. With the product rule we have: d(f g)/dx = f (dg/dx) + g*(df/dx) where f and g are functions of x. Now ...
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Answered by Fahad I. • Maths tutor
3727 Views

How does the human respiratory system work?

When you breath in, the intercostal muscles and diaphragm contract. This causes the diaphragm to flatten and the ribs to move apart which increases the size of the chest cavity. The larger volume now means t...
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Answered by Natasha C. • Biology tutor
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How does Priestley present the character of Mr Birling in An Inspector Calls?

Throughout the play, Priestley presents Mr Birling as a clear representation of the patriarchal upper class. Written in 1945, but set in 1912, the purpose of "An Inspector Calls" is to provoke a ne...
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Answered by Katyana R. • English tutor
208589 Views

The equation of a curve is y = (x + 3)^2 + 5. Find the coordinates of the turning point.

We are asked to find the coordinates of the turning point of a line, and we should first remind ourselves of what this means. A turning point on a line is either a maximum or minimum point, or a point of inf...
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Answered by Marnie S. • Maths tutor
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You are going to enter a creative writing competition. Your entry will be judged by a panel of people your own age. Write the opening part of a story about a place that is co-inhabited by humans and animals.

I could hear a cacophony of calls in the night- this is what woke me. I searched in the dark for a torch and fumbled for the switch. A beam of light hit the edge of my tent and I saw the unmistakable shadows...
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Answered by Josh E. • English tutor
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