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What qualities do I need to show in a top-band Edexcel A-level English Literature answer? (Edexcel)

To achieve top-level marks in English Literature A-level, you need to have an awareness of the five Learning Objectives, or key skills, that the examiners are looking for. These include, in my own words: (AO...
CJ
7596 Views

Find the location of the turning point of the following curve, y = x^2 + 6x - 7

Turning point is when dy/dx = 0 if y= x 2 + 6x - 7 dy/dx = 2x + 6 at turning point: 2x + 6 = 0 therefore: 2x = - 6 x coordinate: x = - 3 substitute into y to find y coordinate: y = (-3) 2 + 6(-3) -7 therefor...
HM
Answered by Hugo M. • Maths tutor
7216 Views

What is the Electron Transport Chain (ETC)?

The electron transport chain is a process that occurs in the inner membrane of mitochondria. It involves the transport of electrons through 4 complexes in the membrane, which provides energy for the transfer...
AJ
Answered by Adam J. • Biology tutor
7606 Views

By using the substitution, x = 2sin(y) find the exact value of integral sqrt(1/3(4-x^2)) dx with limits 0 and 1.

In order to calculate this integral we must use the sustitution provided. x=2siny. Firtsly I will differentiate to find the dx component of the integral, so dx/dy=2cosy hence, dx=2cosydy. Now for the limits ...
SS
Answered by Sara S. • Maths tutor
6551 Views

Show that the line y = x - 7 does not meet the circle (x + 2)^2 + y^2 = 33.

To find potential points of intersection between the line and the circle, we need to solve the equations simultaneously. So, we substitute y = x - 7 into the equation of the circle: (x + 2) 2 + y 2 = 33 (x +...
AI
Answered by Anastasios I. • Maths tutor
19726 Views