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Differentiate the following function u = Cos(x3)

 u = Cos(x3)

To differentiate this function we will use the chain rule. Firstly we will set x3  to another variable name such as v. So now v = x3 . Lets differentia...

SB
Answered by Serena B. • Maths tutor
3550 Views

When and how would you use the vouvoiement in French?

The vouvoiement in French is a form of politness. You would use the "tu" when you are talking to a friend or someone close to you, however you would use the "vous" when referr...

AC
Answered by Amélie C. • French tutor
3644 Views

Prove that the sqrt(2) is irrational

To do this we will assume sqrt(2) is rational, a fraction, which means: 21/2 = m/n; m,n belong to integers. Also, m/n is an irreductible fraction

JC
Answered by Joao C. • Maths tutor
3617 Views

Expand and simplify 2(a + 3) + 5(a – 1)

Firstly we will start by expanding the brackets. We will do 2a + 23 for the first bracket,  then we will do 5a + 5(-1) for the second bracket which will give us 2a + 6 + 5a - 5. We will ...

SB
Answered by Serena B. • Maths tutor
4751 Views

How can I get 8 points out of 8 in Question d of the Economics HL Paper 2?

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