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Solve the simultaneous equation: 2x + y = 7 and 3x - y = 8

The aim of this maths question is to find the two unknowns, x and y, by using simultaneous equations. Simultaneous equations can be solved by either using the elimination method or the substitution method. T...
OG
Answered by Oscar G. • Maths tutor
16173 Views

Integrate ln(x) by parts then differentiate to prove the result is correct

Integrating by parts requirez recognition that ln(x) is equal to ln(x) multiplied by 1. Making u equal to ln(x) should make the integration trivial. Differentiation is a simple use of the product rule and ch...
JD
Answered by Joshua D. • Maths tutor
5085 Views

How do I use the subjunctive tense?

The subjunctive tense is probably the trickiest element of Spanish A level grammar, which is why demonstrating that you know how to use it correctly in assessments, will edge you into that top mark band. In ...
LH
Answered by Lydia H. • Spanish tutor
2847 Views

Solve ((3x+2)/(x-1)) +3 =4

The equation looks horrible to start so we need to tidy it up. We do this by firstly getting rid of the fraction. This means that we need to multiply everything else by the denominator (which in this case is...
RH
Answered by Rebecca H. • Maths tutor
9390 Views

How can I identify whether I am using the nominative, accusative or genitive case in German?

It can sometimes be confusing to identify what case you are about to use in German due to the fact that we don't have these cases in English. However, knowing confidently what case to use is the first step t...
JK
Answered by Jamie K. • German tutor
3337 Views