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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,...

Answered by Eytan M. • Maths tutor

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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...

Answered by Lewis C. • Maths tutor

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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.

Answered by Grace T. • Biology tutor

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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 (cm³). As the question gives the molarity and volume of KMnO4 you...

Answered by Anya B. • Chemistry tutor

10887 Views

A bacterial infection that cannot be treated with one sort of penicillin can be treated with a different sort. Use your knowledge of enzyme action to explain why the different sort of penicillin is effective in treating the infection.

Penicillin inhibits an enzyme that forms cross links in bacterial cell walls halting bacterial reproduction. Different penicillins have different shapes or structures. The penicillin that is not effective...

Answered by Georgia D. • Biology tutor

6035 Views