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What is Natural Law?

Natural law is the theory that an eternal, absolute moral law can be determined by reason. Key scholars are Thomas Aquinas and Aristotle. Aquinas developed the Four Tiers of law, placing natural law on the s...
ZW
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Find the stationary points of the curve y=x^4-8x^2+3 and determine their nature.

First we will differentiate y to find dy/dx= 4x 3 -16x. Stationary points exist at dy/dx=0 so we set 4x 3 -16x=0 and solve for x. x(4x 2 -16)=0. So x=0 or 4x 2 -16=0. If 4x 2 -16=0 then x 2 =4 and so x=2 or ...
Answered by • Maths tutor
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To what extent do pressure groups undermine democracy?

Undermine democracy - On on hand, some pressure groups are elitist, particularly insider pressure groups (ASH). Furthermore, minority interests may be overlooked by big pressure groups representing a mass is...
EC
Answered by Eliza C. • Politics tutor
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Describe the cardiac cycle

Diastole - relaxation of the atria and ventricles means lower pressure within the heart, this causes blood to passively flow through the atria and into ventricles. AV valves are open therefore allowing blood...
BC
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Determine the first derivative of the following curve defined by parametric equations x = 20-5t and y = t^5.

First remember that a parametric curve z = (x(t), y(t)) can be differentiated using the following formula (derived using the chain rule): dz/dt = (dy/dt)/(dx/dt). We should now find dy/dt and dx/dt (which ar...
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Answered by Federico C. • Maths tutor
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