Top answers

Do I have to be good at Maths to achieve good results in IB Economics?

The answer is a definite NO . In the IB course, the focus is really on the basic understanding of different economic theories and how they are applicable in the real world. Only if you take Economics HL woul...
AC
Answered by Ambrose C. • Economics tutor
3000 Views

Must I take Economics for my GCSES before A-levels? If not, will the catching up be difficult?

I did not do A-level Economics, as I did the IB Diploma instead. Having said that, the first few chapters are more or less the same. I also did some self-study on GCSE Economics (though I did not take the ex...
AC
Answered by Ambrose C. • Economics tutor
2199 Views

(x_(n+1), y_(n+1))=(x_n^2-y_n^2+a, 2x_ny_n +b+2). (i) Find (x1, y1) if (a, b)=(1,-1) and (x_n, y_n) is constant. (ii) Find (a, b) if (x1, y1)=(-1,1) and (x_n, y_n) has period 2.

(i) x_1=x_1^2-y_1^2+1, y_1=2x_1y_1+1 by the equations given and the equality of x_1, x_2, x_3 . Substituting and trial and error of factor theorem results in x_1(x_1-1)(4x_1^2-4x_1+5)=0 . The quadratic has n...
TD
Answered by Tutor80806 D. • STEP tutor
1913 Views

How is the perfect tense formed in German?

There are two different types of past tense in German - the perfect and the preterite. The perfect tense is more commonly used in speech and is arguably the easier of the two to construct. To construct the p...
LF
Answered by Liam F. • German tutor
2501 Views

How do I simplify a fraction with surds on the bottom when the surd is part of a function?

When doing questions like this you simply times the top and bottom of the fraction by the bottom function but with a sign change. For example if "5 - √ 3" was the denominator of the fraction (on th...
CW
Answered by Charlotte W. • Maths tutor
8301 Views