Top answers

Differentiate y=ln(ln(x)) with respect to x.

To solve this question we need to understand the process of implicit differentiation, which is a case of using the chain rule. If you remember the chain rule states that for y=f(g(x)), we have y'=f'(g(x))g'(...
MK
Answered by Marek K. • Maths tutor
5938 Views

What is the purpose of a catalytic converter, and what is the reaction equation of a process that it catalyses?

Catalytic converters are used in motor vehicles.They catalyse the conversion of potentially harmful gases produced in the combustion of motor fuel, into less harmful gases.The reactants for such a conversion...
AB
Answered by Annie B. • Chemistry tutor
4958 Views

Is it OK to use parts of another person’s personal statement that I found somewhere?

This is a question that a lot of students ask, and with good reason: studying for your A-Levels, applying to universities, and still having time for any other interests you most likely have can be really cha...
IS
9209 Views

How do you differentiate ln(f(x))? Tricks like these occur commonly in STEP questions (including one I was looking at earlier today).

Assumed knowledge: The chain rule, implicit differentiation and being able to differentiate exp(x).Chain rule: d/dx = d/dy * dy/dxImplicit differentiation: f(y) = g(x) => f'(y)*dy/dx = g'(x) (where f'(y) ...
JR
Answered by Joseph R. • MAT tutor
2684 Views

How do I answer a question in the writing part of the exam?

There are several elements that need to be taken into account when replying to a question. To begin with, it is important that you understand what the question is asking; you must be careful not to go off to...
RP
Answered by Rachele P. • Italian tutor
2737 Views