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How to solve simultaneous equations with two unknowns?

There are two methods for solving simultaneous equations, the algebraic method or graphic method. While using graphs is a useful visual way to solve simultaneous equations, this is more time consuming and...

Answered by Emily H. • Maths tutor

21428 Views

When trying to solve inequalities (e.g. 1/(x+2)>x/(x-3)) I keep getting the wrong solutions even though my algebra is correct.

*The usual mistake with inequalities is not with a students algebra, but with lack of consideration of the inequality signs. During a tutorial I would show their false method and my correct one and also s...

Answered by Timothy H. • Maths tutor

3547 Views

Prove that (AB)^-1 = B^-1 A^-1

This problem can be solved in 8 steps:

1. Let AB = C

2. A^-1AB = A^-1C

3. IB = A^-1C as the identity matrix I = A^-1A

Answered by Katie H. • Further Mathematics tutor

111322 Views

What is the most important thing to do in the interview?

From my own experience and asking other people and tutors I think the most vital thing to do is be enthusiastic and passionate about your subject. If you can demonstrate a real, genuine interest in your s...

Answered by Connor D. • Oxbridge Preparation tutor

1706 Views

How should I learn all the cases?

First of all, you do not need to learn every case as there are just too many to learn. Second, there are different cases for the same points so just remember the one that is easier for you (though make su...

Answered by Connor D. • Law tutor

3027 Views