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When I try to integrate by parts, I end up in an infinite loop. Why is this, and how do you stop?

This could be happening for two reasons. Firstly, the negative form of the expression that you are being asked to integrate could be appearing in your answer, after you've used the 'integrating by parts' met...
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Answered by Tommy S. • Maths tutor
8056 Views

How do you differentiate?

for example 3x 2 +2x+1 differentiated? ax n differentiates to (an)x n-1 therefore 3x 2 goes to 6x 2x goes to 2 and 1 goes to 0 so the final answer is = 6x + 2
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Answered by Kate B. • Maths tutor
3740 Views

How do we add and subtract negative numbers?

Well, for numbers, we have a number axis which is a straight line (like this [...]) and it is divided into more pieces, of one unit each. We begin to draw this axis by placing zero in the middle (like this [...
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Answered by Maria T. • Maths tutor
4292 Views

There are n sweets in a bag, 6 of which are orange, the rest are yellow. Hannah takes a random sweet from the bag and eats it, and then does so again. The probability that Hannah eats two orange sweets is 1/3. Show that n^2-n-90=0.

The probability that the first sweet Hannah eats is orange is 6/n, as there are n sweets and 6 of them are orange. If this is indeed orange, then there are now n-1 sweets left in the bag, of which 5 are oran...
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Answered by Jonny S. • Maths tutor
4211 Views

Factorise and solve x2 - 8x + 15 = 0.

Factorise and solve x 2 - 8x + 15 = 0. When factorising there are 3 things to look for; A common factor in each component of the equation. In this case there are no common factors. Whether the equation is ma...
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Answered by Olivia R. • Maths tutor
23735 Views