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How to solve rates of change questions?

If the question is about something losing value, for example a cars value depreciates at a rate of 30% a year after 4 years how much will the car be worth? You are also given that at year 0 it was worth £10,...
EW
Answered by Emma W. • Maths tutor
6655 Views

What's the best way to study for the French MLAT?

The first thing to remember is that they're not trying to catch you – the MLAT is a test to assess your current level in a language, in order for it to be considered alongside all the other elements that mak...
AB
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A curve has equation y = 20x −x^2 −2x^3 . Find its stationary point(s).

Differentiate the equation.Let the derivative equal to 0 and get x.Substitute the value of x into the original equation to get y.
RL
Answered by Ruonan L. • Maths tutor
5528 Views

f(x) = 2x3 – 5x2 + ax + 18 where a is a constant. Given that (x – 3) is a factor of f(x), (a) show that a = – 9 (2) (b) factorise f(x) completely. (4) Given that g(y) = 2(33y ) – 5(32y ) – 9(3y ) + 18 (c) find the values of y that satisfy g(y) = 0, givi

a) 54-45+3a+18=0 3a+27=0 3a=-27 and thus a=-9b) 2x^3 – 5x^2 -9x + 18 = (x-3) (2x^2 +bx-6)to find b ; collect the x^2 terms so bx^2-6x^2=-5x^2 and thus b=1c) when comparing f(y) and f(x) we see that x=3^2yf(x...
AK
Answered by Akrit K. • Maths tutor
9083 Views

How do I plan an essay effectively?

Read the question carefully, you might want to underline or highlight key words so as to ensure you keep these in mind when planning. You will need to consider which textual material to draw upon and what yo...
MV
4139 Views