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Find the derivative of y=e^(2x)*(x^2-4x-2).

Notice that y can be expressed as y=f(x)g(x), in which f(x)=e^(2x) and g(x)=x^2-4x-2.Through the product rule, we know that dy/dx=f'(x)g(x)+f(x)g'(x).Through the chain rule, we can solve f(x) by rewriting in...
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Answered by Samuel H. • Maths tutor
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Solve x^2+4x-5=0

Two approaches.1.Note that the equation is a quadratic equation, and can thus be solved per the quadratic formula, in which the solutions are given to be (-b+-sqrt(b^2-4ac))/2a.Plugging in the values from th...
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Answered by Samuel H. • Maths tutor
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Discuss the differences between operating systems designed for desktop computers and embedded systems.

Desktop:Supports a wide range of peripheralsRun a wide range of softwareManage securityNetworking protocols(etc)Embedded:Low hardware requirementsManage power consumptionNo/minimal UII/O(etc)
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Answered by Samuel H. • Computing tutor
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What are the consequences of drug use in sport on the sport itself?

The 'clean' athletes and new records set are questioned and not given credit they deserve. It creates bad publicity and a bad name for the sport, e.g Tour de France cycling after Lance Armstrong doping case....
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Describe and give one reason for the global distribution of volcanoes.

Volcanoes are most commonly found along destructive plate margins, they also occur at constructive and conservative plate margins. Additionally some are also found away from margins, e.g Hawaii, these are kn...
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Answered by Robyn B. • Geography tutor
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