Graphs 9
3 marks · NormalDifferentiate the function with respect to and find the value of the gradient at .
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Gradient at x = 2 is 76 (±0)
Also accept: 76
Common mistakes: Wrong differentiation; Wrong substitution order
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Marking points
M1 · 1 mark · Attempts to differentiate each term.
A1 · 1 mark · Correct derivative:
A2 · 1 mark · Substitutes and obtains gradient 76. (follow-through)
Worked solution