Top answers

The curve C has equation y = f(x) where f(x) = (4x + 1) / (x - 2) and x>2. Given that P is a point on C such that f'(x) = -1.

Firstly, in order to solve this problem we would need to differentiate f(x) to get f'(x). To differentiate this we would use the quotient rule. The quotient rule is that: dy/dx = (V.dU/dx - U.dX/dx) / V^2 wh...
CC
Answered by Chantelle C. • Maths tutor
15810 Views

Complete Question won't fit here. Please see Explanation. Thanks.

Complete Question: Mr. Brown and his 2 children are going to London by train. An adult ticket costs £24 and a child ticket costs £12. Mr. Brown has a family rail card which gives his 1/3 off adult tickets an...
IH
Answered by Isaac H. • Maths tutor
9529 Views

Find Solution to x^2 + x - 2=0

Using the factorisation method. the factorised solution will look like (x+a)(x+b) = 0 by multiplying these two brackets we get the equation: x^2 + a.x+b.x + a.b = 0 so vomparing this to the equation in the q...
MP
Answered by Matthew P. • Maths tutor
5826 Views

How do you factorise fully 3 a^3 b + 12 a^2 b^2 + 9 a^5 b^3?

WORKING OUT 3a 3 b+12a 2 b 2 +9a 5 b 3 1) 3(a 3 b+4a 2 b 2 +3a 5 b 3 ) 2) 3a 2 (ab+4b 2 +3a 3 b 3 ) 3) Fully factorised: 3a 2 b(a+4b+3a 3 b 2 ) BRIEFLY EXPLAINED Factorising is the process of taking out any ...
AW
Answered by Anna W. • Maths tutor
4702 Views

How can I improve my score?

Maths is all about practise. Once you have covered a topic, you should do as many practise questions as possible to help you understand the topic. Always show your working out on your exam paper to gain maxi...
SL
Answered by Samah L. • Maths tutor
4898 Views