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A curve has equation y = 20x −x2 −2x3 . (A) Find the x-coordinates of the stationary points of the curve.

Firstly, differentiate the equation to find dy/dx.
dy/dx = 20 - 2x - 6x2
As dy/dx represents the gradient, we know that for a stationary point the gradient must be zero, hence for the...

BW
Answered by Bradley W. Maths tutor
6160 Views

How is the theme of dreams abd reality represented in The Great Gatsby

It is key that within this essay the main focus is upon who is the dreamer and who is the realist. The character of Gatsby is one that would initially appear as a dreamer; his life-long strive for money a...

NS
Answered by Nanija S. English tutor
1964 Views

"The USSR was responsible for starting the Cold War." Do you agree with this statement?

The Soviet Union were thought to be at fault for starting the cold war by many historians at the time of the cold war. The reason for this is because the Soviet Union were known to be infiltrati...

CG
Answered by Cerys G. History tutor
103961 Views

Briefly describe the nature of three types of intramolecular bonding and two types of intermolecular bonding (drawings encouraged)

The terms intra- and intermolecular bonding refers to bonds formed between atoms within molecules and between two or more molecules respectively. Intramolecular bonding would be: ionic, covalent and metal...

TD
2724 Views

Why is an object moving in a circle at a constant speed said to be accelerating?

First of all, it is important to remember that an object's acceleration is the rate of change of its velocity, not its speed. Velocity is a vector quantity and so must have a direction as well as a magnit...

SG
Answered by Sam G. Physics tutor
17838 Views

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