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What is the best way to approach analysing a historical source?

Firstly it is important to cover the who, what, when and where of the source to gain a better understanding. Next, the content of the source should be picked apart to find the true point of it. This should h...
JV
Answered by Jessica V. • History tutor
2888 Views

Find the inverse of the following function: g(x) = 4/(3-x)

A function is simply a process that takes in a number, does a few operations on it (for example, add, multiply etc), and then gives out another number. If you want to figure out the inverse of a function, al...
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Answered by Eytan M. • Maths tutor
5675 Views

How do you solve the equation e^2x - 2e^x - 3 = 0 ?

This is a 'quadratic in e^x'. The easiest way to recognise this when starting problems like this is to let y=e^x. As you practice problems like this, you will find yourself moving away from this step. But it...
LC
Answered by Lewis C. • Maths tutor
15916 Views

Describe the different levels of protein structure during the production of a protein

Primary Structure : Peptide bonds form between the carboxyl and amino groups of adjacent amino acids, forming a long polypeptide chain . Secondary Structure : Reactions and interactions, such as hydrogen bon...
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Answered by Grace T. • Biology tutor
3104 Views

24.3cm^3 of 0.02moldm-3 KMnO4 reacted with 20cm^3 of iron (II) solution. Calculate the molarity of the iron (II) solution.

Firstly calcuate the moles of KMnO4 by using the equation n=MV/1000 where n=moles M=molarity (moldm -3 ) and V= volume (cm 3 ). As the question gives the molarity and volume of KMnO4 you simply plug the valu...
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Answered by Anya B. • Chemistry tutor
12174 Views