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How can I remember when a turning point of a function is a maximum or a minimum?

The key is to look at the first and second derivatives of that function. Remember that a turning point always has the first derivative equal to zero. Then, the sign of the second derivative indicates if that...
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Answered by Titus D. • Maths tutor
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Outline how one study demonstrates localisation of function in the brain.

Localisation is the theory that different areas of the brain correspond to different functions and behaviours. Hence if one such area becomes damaged, the function that it carries out will no longer be perfo...
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Answered by Beth T. • Psychology tutor
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What strategies did the Nazi's use to encourage civilian support?

One way that the Nazis were able to achieve support, was through domestic policies that increased employment and hence consolidated the people's faith in the ability of the Nazi regime to deliver a better wa...
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Answered by Shanaka P. • History tutor
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A trolley of mass 0.75kg is running along a frictionless track at a constant speed of 0.7ms-1, as the trolley passes below a mass of 0.5kg the mass drops a short vertical distance onto the trolley. Calculate the new velocity of the trolley and mass.

Momentum = mass x velocityInitial momentum = 0.75 x 0.7 =0.525kgms-1Momentum is assumed conserved so final momentum = 0.525kgms-1So final mass = 0.5+0.75 = 1.25kgSo final velocity = 0.525/1.25Final velocity ...
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Answered by Alexander M. • Physics tutor
2768 Views

Explain how increased blood CO2 leads to an increased heart rate

The high CO2 rate is detected by chemoreceptors in the aorta. The chemoreceptors send impulses to the medulla in the brain. The medulla then sends impulses along sympathetic neurons to the sinoatrial node in...
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Answered by Alice V. • Biology tutor
12820 Views