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f(x)=ln(x). Find the area underneath the curve f(x) between 1 and 2.

We cannot dirrectly intergrate ln(x), so instead we intergrate 1ln(x) using intergration by parts.
The formula for intergration by parts is: ∫ (udv/dx) dx = uv − ∫ vdu/dx dx .
We le...

Answered by Angus T. • Further Mathematics tutor

2528 Views

Solve 29cosh x – 3cosh 2x = 38 for x, giving answers in terms of natural logarithms
Firstly, we need the equation to be in terms of one cosh argument if possible, which can be done by the identity cosh 2x = 2cosh²x - 1. Upon substitution and simplification we get 6cosh²
JC
Answered by Jacob C. • Maths tutor
4483 Views
Describe how ions, water and sugar are obtained and transported through plants. In your answer you should refer to materials moving upwards and downwards in a plant. (6 marks)
Since this is a 6 marker, it is important for you to firstly express yourself coherently, and secondly write the 'key words' that examiners look for. The question is referring to the transport pro...
ZI
Answered by Zahra I. • Biology tutor
8005 Views
Balance the following equation for the formation of magnesium chloride: Mg + HCl --> MgCl2 + H
Mg + 2HCl --> MgCl2 + H2
There are two chlorines in magnesium chloride so you put a two in front of the hydrochloric acid. This means that you need to put a 2 aft...
HG
Answered by Helen G. • Chemistry tutor
3605 Views
What is Ionic bonding?
Ionic bonding is bonding between a metal and a non-metal. This happens due to a transferal of electrons. For example a metal from group 2 such as Magnesium bonding to a non-metal from gro...
BB
Answered by Bobby B. • Chemistry tutor
2088 Views
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Top answers

f(x)=ln(x). Find the area underneath the curve f(x) between 1 and 2.

Solve 29cosh x – 3cosh 2x = 38 for x, giving answers in terms of natural logarithms

Describe how ions, water and sugar are obtained and transported through plants. In your answer you should refer to materials moving upwards and downwards in a plant. (6 marks)

Balance the following equation for the formation of magnesium chloride: Mg + HCl --> MgCl2 + H

What is Ionic bonding?

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