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How do you differentiate x^x?

To differentiate x x , we first let y = x x . ( Note that x x is not in the form x c where c is a constant or a x where a is a constant so the usual differentiation formulas cannot be used ). The trick here ...
AP
Answered by Anish P. • Maths tutor
3773 Views

How to score highly in grammar when writing an essay in an exam

First and foremost, try to get a good range of grammatical techniques when writing the essay for example subordinating conjunctions or adjectival nouns. Demonstrating your knowledge of these techniques shoul...
BC
Answered by Benedict C. • German tutor
2379 Views

Which kind of articles do we have in Italian?

In Italian, as well as in English, we have two kinds of articles, more specifically definite and indefinite articles. Yet, the main difference between the two languages lies in the number of articles availab...
GB
Answered by Giulia B. • Italian tutor
2649 Views

What is the best way to prepare for the speaking exam?

Start early and write down what you want to say. Check that it meets all the required learning outcomes and the markscheme. Next practise reading it out loud (you could read it to someone who is a native spe...
PM
Answered by Pauline M. • German tutor
2192 Views

The straight line with equation y = 3x – 7 does not cross or touch the curve with equation y = 2px^2 – 6px + 4p, where p is a constant. Show that 4p^2 – 20p + 9 < 0.

The main piece of information this question gives us is that the two lines do not cross or touch. From this we can immediately see that we will need to use the discriminant of the quadratic formula b 2 - 4ac...
MW
Answered by Molly W. • Maths tutor
27677 Views