Top answers

What tips do you have for the writing portion of the exam?

This last question on any French GCSE exam is about putting into use all of the tricks you have learnt over the last two years. I recommend looking over the marking scheme before the exam to know exactly wha...
CC
Answered by Camille C. • French tutor
2472 Views

Solve the following integral: ∫ arcsin(x)/sqrt(1-x^2) dx

We will solve the integral by part. We know the formula for integration by parts: ∫ f(x)'g(x)dx=f(x)g(x)-∫f(x)g(x)'dx (1) . We know that: (arcsin (x))'=1/sqrt(1-x^2) . So we can write arcsin(x)/sqrt(1-x^2) d...
IC
11989 Views

Factorise x^2-25

=(x-5)(x+5)
UP
Answered by Urja P. • Maths tutor
3757 Views

Should maximising profits be the main objective of a business?

In order to answer, one should consider the benefits of profit maximisation. These may include: satisfying shareholders, using money for savings in order to stay afloat, reinvesting profits into technology (...
CD
Answered by Caitlin D. • Economics tutor
10034 Views

What chemical tests are appropriate to identify Butanoic acid, Propanal and 2-methyl propan-2-ol?

Firstly, to identify butanoic acid, adding a small amount of NaHCO 3 or any metal carbonates would allow effervescence tobe produced. The effervescence produced is CO 2 . To make sure the gas is CO 2 , simpl...
AI
Answered by Athena I. • Chemistry tutor
13243 Views