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How can I organise my timing more efficiently

I believe that timing is one of the most important aspects of exams. For me giving yourself strict structures to your timing during exams is essential to getting the best answer. Figure out how much ti...

Answered by Alice B. • English tutor

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What are the most important points to consider when carrying out my EPQ?

The crux of an EPQ is that it is there not only to test your skills in your chosen product (i.e. fluency, coherency, depth of analysis etc in a project where the product is an essay) but also to test m...

Answered by Rebecca B. • Extended Project Qualification tutor

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Show that the following system of equations has an infinite number of solutions. x+y+2z = -2; 3x-y+14z=6; x+2y=-5

Substitute values of one equation into another.

(1) x+y+2z = -2; (2) 3x-y+14z=6; x+2y=-5 (3).

Substitute x in (1) and (2) from (3).

We get -y+2z=3 in (1).

Answered by Egidijus S. • Maths tutor

7902 Views

When the polynomial 3x^3 +ax+ b is divided by x−2 , the remainder is 2, and when divided by x +1 , it is 5. Find the value of a and the value of b.

Insert the negative values of the divisors and put them into the polynomial. x-2 -> P(2) = 34+2a+b=2 x+1 -> P(-1)=3(-1)+(-1)a+b=5. 22+2a+b=0 -8-a+b=0, then solve the simultaneous equa...

Answered by Egidijus S. • Maths tutor

18503 Views

Name several sort algorithms of an array, their working principles and their efficency.

Bubble sort (compare two elements and switch them if one of them is higher than other, depending on ordering preference), iterate over the whole array of elements. Efficency O(n²).

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Answered by Egidijus S. • Computing tutor

2914 Views