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ForA=2x^2 –18x+80 (i) find dA/dx , (ii) find the value of x for which A is a minimum

dA/dx = 4x -18 : multiply the number before the x (coefficient) by the power and minus 1 from the power.4x = 18 so x = 4.5 to find the minimum or maximum point, make the differential equal to 0 and solve for...
DA
Answered by Dan A. • Maths tutor
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Why is the oxygen saturation curve of haemoglobin sigmoidal?

The saturation curve of haemoglobin shows positive cooperativity. Initially, the porphyrin ring of the haem prosthetic group in haemoglobin is dome-shaped. When one molecule of oxygen binds one of the four s...
YM
Answered by Yunzila M. • Biology tutor
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What is the benefit of myelination of an axon?

Myelination of an axon makes propagation of action potentials along it much faster. In unmyelinated axons, the action potential is constantly regenerated by active propagation, with the depolarisation causin...
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Answered by Yunzila M. • Biology tutor
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Explain one disadvantage of increasing the budget deficit

One argument against increasing the budget deficit is that and increase in government spending crowds out the private sector. This is when government spending fails to increase overall aggregate demand becau...
TD
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how do I write an essay including a case study effectively

in order to use a case study effectively, it is important to highlight the key words in the question and look for what they are asking such as: explain, analyse, show and describe. All having a very differen...
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Answered by Gaya F. • Geography tutor
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