Top answers

How do I 'simplify' a surd?

Simplifying a surd means to express it using smaller numbers, making it easier to use in calculations. There are a couple of facts you will need to learn about surds, these are, 1) sqrt(a x b) = sqrt(a) x sq...
JZ
Answered by Joanna Z. • Maths tutor
5746 Views

Ser or estar?

In Spanish there are two ways of saying to be. Ser is generally used for things that don’t change too much – inherent characteristics of people or things. Some examples are marital status, height, occupation...
CK
Answered by Chris K. • Spanish tutor
8574 Views

A curve C has equation 2^x + y^2 = 2xy. How do I find dy/dx for the curve C?

This question requires an understanding of implicit differentiation, a specific form of the chain rule for derivatives. (Aside/reminder) - Implicit function vs Explicit function: Explicit functions : y may b...
JC
Answered by Jesse C. • Maths tutor
13365 Views

Explain Ohm's Law

Ohm's Law
ZA
Answered by Zeeshaan A. • Physics tutor
2864 Views

How can I write an effective, original composition which will get a good mark?

The key to writing a good composition for A level music is keeping to a specific style which you set out in the accompanying explanation of the piece that you provide with it. In choosing a style or genre a ...
HS
Answered by Harry S. • Music tutor
4963 Views