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How can I find the area under the graph of y = f(x) between x = a and x = b?

You can find the area under this graph by evaluating the definite integral of y = f(x) with respect to x between x = a and x = b Please note: An area below the x-axis has a negative value Example: Find the a...
JR
Answered by Jonathan R. • Maths tutor
5612 Views

What is cost push inflation?

Cost push inflation is the result of an increase in the price of the factors of production e.g. labour, raw materials. For example, an increase in the price of oil will increase the price of most raw materia...
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Answered by Nick O. • Economics tutor
6328 Views

How do I find the equation of the normal line given a point on the curve?

The normal line to a curve at a particular point is the line through that point and perpendicular to the tangent. A simple trick to remembering how to find the normal gradient, n , is that the slope of any l...
JM
Answered by Joy M. • Maths tutor
89093 Views

When do I use the conditional perfect tense in a "si" clause?

The conditional perfect tense should be used in a "si" clause when there is no possibility for the event to happen. It must also be used with the pluperfect tense. For example: If I had known I wou...
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Answered by Daniel A. • French tutor
4236 Views

Prove why the quadratic formula works

The quadratic formula is x = [- b ± √( b 2 - 4 ac )]/2 a (1) , where a,b and c are the coefficents of a quadratic in the form a x^2+ b x+ c =0 (2) . To prove that this works we need to start from equation (2...
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Answered by Jake R. • Maths tutor
6989 Views