Top answers


Find the area enclosed between C, the curve y=6x-x^2, L, the line y=16-2x and the y axis.

First we need to find the intersection point(s) of L and C so set 6x-x 2 =16-2x and rearrange to get x 2 -8x+16=0 so (x-4) 2 =0.Repeated root so line is tangent to the curve at x=4, y=16-2(4)=8 that is the p...
DM
Answered by David M. • Maths tutor
4214 Views

Evaluate the multi-store model of memory (4 marks).

The case study of HM, as reported by Milner (1966), can be used to evaluate this model. HM had both of his hippocampi and parts of the temporal lobe removed following a lifetime of epileptic seizures. Follow...
AP
13950 Views

What are some of the key themes in Mary Shelley's Frankenstein in relation to the Gothic?

The Gothic tropes of horror and terror - suspense leading to horror - are prominent in Shelley's Frankenstein ; for example, the build-up to and reveal of Elizabeth's death ("suddenly I heard a shrill a...
AB
7345 Views

What is a binary tree? What is the time efficiency when searching a balanced binary tree of size n nodes and why? What is the advantage of using a binary tree rather than an ordinary list?

A binary tree is a special type of tree with one source node (no parents) and each node has a maximum of two child nodesEach node stores a valueUsed to store sorted numerical dataTime efficiency is O(logn)Th...
JR
2529 Views

Express 9^3x + 1 in the form3^y ?

In these types of question, you need to find out how the integer relates to the new integer - it will be by integrals. We can see that 9 is just 3 x 3 which is 3^2. Thus we now have 3^2(3x +1). As we know fr...
PM
Answered by Polly M. • Maths tutor
4378 Views