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Explain and discuss the causes of MSLR (Mean Sea Level Rise)

This question draws on knowledge from the IB Topic : Consequences of Global Climate Change- Sea level section. Tip- Impress your examiner by showing awareness of how the causes of sea level rise are very dif...
JB
Answered by Jordi B. • Geography tutor
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Solve the equation 2log (base 3)(x) - log (base 3)(x+4) = 2

First express as a single logarithm as follows. The number in front of the logarithm remembering log rules can be rewritten as the power of the number in the bracketsSo rewriting the LHS log 3 (x 2 ) - log 3...
TS
Answered by Theranjit S. • Maths tutor
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Show that the set of real diagonal (n by n) matrices (with non-zero diagonal elements) represent a group under matrix multiplication

We must show that the set satisfies the group requirements: Identity, Closure, Associativity and Invertibility.Identity: Contains identity matrixAssociativity: Follows from the rules of matrix multiplication...
NP
3330 Views

solve the simultaneous equations: 3x + 5y = 4 ; 7x - 3y = 8

first recognise that if you double the first equation the both equations will be equal to 8.so now we have 6x + 10y = 8 ; 7x - 3y = 8now we can set the equations equal to each other to get 6x + 10y = 7x - 3y...
EW
Answered by Elizabeth W. • Maths tutor
4357 Views

differentiate: y=[xcos(x^3)]/[(x^4 + 1)^3] with respect to x

This question is on the trickier side as it is heavily computational and requires a good knowledge of the differentiation rules however it is a good way to practise using multiple rules at once.First we will...
EW
Answered by Elizabeth W. • Maths tutor
3127 Views