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What is a moment?

A moment about a point is the product of a force applied and the distance perpendicular to the line of action of that force. So M = F*d
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Answered by Kieran T. • Physics tutor
3163 Views

How and when should I include a historians' opinion?

You should include a historians' opinion to support or contrast the argument you have made. For example, say you were arguing for a certain time period that agrarian issues led to public discontent, and thus...
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Answered by Caitlin C. • History tutor
3392 Views

Given that y = sin(2x)(4x+1)^3, find dy/dx

The product rule states that (uv)' = u'v + uv' Therefore we know that to find dy/dx we must have (sin(2x))'(4x+1)^3 +sin(2x)((4x+1)^3)' We can differentiate sin(2x) to 2cos(2x) and using the chain rule we ca...
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Answered by Myles M. • Maths tutor
4906 Views

When do we use the quadratic formula, and when the completing the square method?

First, you have to understand that both are essentially the same; the formula is based on the completing the square method. ax^2+b^x+c=0 can with appropriate steps be transformed to x = (-b +- root(b^2-4ac))...
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Answered by Ioannis P. • Maths tutor
4956 Views

How are endings formed for past participles?

If the participle is linked to the verb "être" or used as an adjective, its ending is associated with the gender of the subject (add an "e" for female), and the number of subjects ("...
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Answered by Mathieu L. • French tutor
2891 Views