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DNA and mRNA are both nucleic acids and are made up of a sugar, phosphates and a base. However, they are very different. Firstly by simply looking at the molecules DNA is double stranded whereas mRNA is s...

X² -> 2X

3X -> 3

7 -> 0

Therefore X² + 3X + 7 integrates to 2X + 3

Use quotient rule to differentiate:

dy/dx = (18x(3x+2) - 3(9x²+1))/(3x+2)²

set dy/dx=0:

54x² + 36x - 27x² - 3 = 0

9x² + 1...

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...

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 underst...