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What's the first thing I should do when responding to an exam question?

Firstly and most importantly, I would recommend reading the question carefully, making sure you understand it. If there is a passage that comes alongside it, do give yourself time to read carefully and see h...
AM
4490 Views

y =(4x)/(x^2+5) (a) Find dy/dx, writing your answer as a single fraction in its simplest form. (b) Hence find the set of values of x for which dy/dx<0

dy/dx = 4/(x^2+5) - 4x(2x)/(x^2+5)dy/dx= 4(5-x^2)/(x^2+5)^2Part B4(5-x^2)/(x^2+5)^2&lt;05-x^2&lt;05&lt;x^2
DK
Answered by Dominic K. • Maths tutor
4731 Views

Translate the following passage into French:

I have not had a lot of free time recently because I must revise for my exams. However, I like to exercise to improve my health. At home, when I am not working, I use my computer in order to download music a...
JG
Answered by Justin G. • French tutor
3154 Views

Factorise f(x)=3x^3+8x^2-20x-16 completely

First we need to use the factor theorem to find a factor.f(1)=-25 so x-1 is not a factorf(-1)=9 so x+1 is not a factorf(2)=0 so x-2 is a factorSo x-2 is our starting point, we need to polynomial division f(x...
LB
Answered by Luke B. • Maths tutor
5992 Views

Solve the following simultaneous equations 7x - 6y =38 and 3x + 9y =-3

To solve these equations you first want to eliminate the same variable from each equation. In this question it is easiest to eliminate Y, to do this we will times equation 1 by 3 to get 21X-18Y=114 and equat...
IR
Answered by Isabelle R. • Maths tutor
3966 Views