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Integrate 1/x

ln|x| + c
GG
Answered by George G. • Maths tutor
4153 Views

I'm struggling with how to write an essay in an exam under pressure. Can you help?

In an exam, your time is very limited. You don't have time to make extremely sophisticated points or go off on a ramble. The most important thing is to identify which essay question you want to answer. In an...
AC
4982 Views

Why do enzymes only catalyse specific reactions?

Enzymes are made up of specific amino acid sequences. Bonds form between amino acids in the chain in specific places. Hydrogen bonds form and fold the sequence into a secondary structure. Ionic bonding, disu...
JD
Answered by James D. • Biology tutor
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An item costs £65 but requires an additional 20% VAT to be added. How much change will you get from £100

(65 / 10)*2 = 13 This is the total amount of VAT to be added.65 + 13 = 78 This is the total amount spent.100-78= 22 Total change is £22.
CR
Answered by Carys R. • Maths tutor
3488 Views

Solve the following two equations simultaneously: 3x + y = 10, x + y = 4

Label the equations Equation 1: 3x + y = 10Equation 2: x + y = 42) Establish if the equations need to be subtracted or added together: 'Same sign is subtract and different sign is add' Therefore we need to s...
BA
Answered by Bethany A. • Maths tutor
3537 Views