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how do you differentiate y=x^2 from first principles?

let us start by taking two points on the curve y=x 2 , the first with x-coordinate x, and the second x+Δx and drawing a straight line between them. We can form a right-angled triangle, with two sides paralle...
CV
Answered by Christian V. • Maths tutor
14989 Views

Describe the two types of revelation (5 marks).

Revelation refers to the concept of knowledge which is revealed by a god to human beings, so that humans can know something important which would otherwise be unaccessible to them. This knowledge could be, f...
RB
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Expand and simplify (x-7)^2

Write out the question fully like so: =(x-7)(x-7) 2. Expand the brackets using the FOIL method. i.e First Outer Inner Last or the Crab Claw Method You should get: = x^2 - 7x - 7x + 49 Be careful with signs, ...
AC
Answered by Aisling C. • Maths tutor
32975 Views

Evaluate whether higher government spending will always increase inflation.

Government spending is the total spending by government on all goods and services in a given period of time. Inflation is the sustained increase in the general price level over a given period of time. Higher...
VU
Answered by Victor U. • Economics tutor
58985 Views

If 11 carrots weigh 170g how much would 20 carrots weigh?

170 divided by 11 is the weight of one carrot (15.45), so mulitply that by 20 (309.09) would be the weight of 20 carrots.
FS
Answered by Freya S. • Maths tutor
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