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Turning points of the curve y = (9x^2 +1)/3x+2

Use quotient rule to differentiate: dy/dx = (18x(3x+2) - 3(9x 2 +1))/(3x+2) 2 set dy/dx=0: 54x 2 + 36x - 27x 2 - 3 = 0 9x 2 + 12x - 1 = 0 solve quadratic to obtain values of x, and then find corresponding va...
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Answered by Jacob H. • Maths tutor
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What's the best way to approach source-based questions?

Source-based questions can be tricky. More than any other question format, examiners choose source-based questions to prevent candidates from simply regurgitating a pre-formed essay. In other words - they fo...
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Answered by Leo S. • History tutor
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What is the most effective way to answer an essay question in the exam?

Note: During the session I would have a practice question I would use to highlight these points more effectively and to help the student understand better. First of all it is necessary to read and understand...
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Describe the use of PCR and how exponential amplification can be achieved.

Polymerase chain reaction ( PCR ) is a technique used in molecular biology to amplify a single copy or a few copies of a segment of DNA across several orders of magnitude, generating thousands to millions of...
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Answered by Sam B. • Biology tutor
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With reference to two volcanic events that you have studied from contrasting areas of the world, compare the ways in which volcanoes and their hazards have been managed.

The management of a volcanic hazard can help to greatly reduce the negative impacts that an eruption can have on the population surrounding the area. The eruption of Nevado del Ruiz, Columbia, on the 13 th o...
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Answered by Laura S. • Geography tutor
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