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Integrate x((x^2)+2) dx

The first step is to multiply out the brackets so the function is in a form that can be integrated. X x X 2 = X 3 then X x 2 is simply 2X. So we are left with X 3 + 2X. Both parts of this function can be int...
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Answered by Benjamin H. Maths tutor
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There are 31 days in January. January 21st 2015 was a Wednesday. What day of the week was February 8th 2015?

First we need to know how many days are still remaining before the end of January. In this case it would be 10 since 31-21=10. We know that 8th of February is the 8th day of the month, so in total between Ja...
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Answered by Roman D. Maths tutor
8266 Views

How should I structure the essay question in my exam?

You need to have done some research on different topics (they will be in your text book) relating to a French-speaking country. In your answer you must include some facts that you have learned, whilst keepin...
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Answered by Beatriz L. French tutor
2616 Views

Find the equation of the straight line joining points (-1, -4) and (2, 5)

Draw sketch of line 2. Find gradient using m=(y 2 - y 1 )/(x 2 - x 1 )= 5--4/2--1=9-3=3 3. Choose one of the points and call it (a,b). I'll pick (2,5) because there's no negaitves. 4. Sub into equation y-b=m...
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Answered by Ben M. Maths tutor
8958 Views

How is an action potential formed when the neurone is stimulated?

When the neurone is stimulated , the Na+ channels open to allow influx of sodium ions down its electrochemical gradient. This makes the inside of the cell less negative. When threshold voltage (-55mV) is rea...
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Answered by Ismael C. Biology tutor
3262 Views