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How do I find the expression for the nth term in a series of numbers?

First write down the series of numbers e.g. 8, 12, 16, 20. Calculate the difference between each term in the series 12-8 = 4, 16-12 = 4, 20-16 = 4 This shows that the expression will begin with 4n as the dif...
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Answered by Megan B. • Maths tutor
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Differentiate with respect to x: y=(6x^2-1)/2sqrt(x)

1st Step: Must separate the fractions and simplify: y= (6x 2 -1)/2sqrt(x)= 6x 2 /(2x 1/2 ) - 1/(2x 1/2 ) Cancel 6 with 2 and x 2 with x 1/2 => y= 3x 3/2 - x -1/2 /2 2nd Step: Differentiate: dy/dx= (9/2)x ...
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Answered by Elena S. • Maths tutor
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How relevant is the reading I mention in my personal statement to my interview?

For History in both Oxford and Cambridge there is typically two interviews for applicants. The first will be based around your personal statement so it is very important that you are familiar with any readin...
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Why should we use biodiesel rather than regular petroleum diesel?

The combustion of biodiesel produces less carbon dioxide, sulfur dioxide and particulates than that of regular diesel. This causes less global warming from the greenhuse effect and less sulfur dioxide pollut...
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Answered by Bradley M. • Chemistry tutor
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Which of these DNA mutations is likely to have the greatest effect on the structure of the encoded protein? Justify your answer. •Single base substitution •15 bases base deletion •Insertion of 2 bases

The most serious of these mutations will be the insertion of 2 bases. Becasue the genetic code is read in triplets, a 2 base insetion will alter the reading frame of the code causing a frameshift mutation me...
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Answered by Emma M. • Biology tutor
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