waecE-LEARNING
Further Mathematics Paper 2, May/June. 2014  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Main
General Comments
Weakness/Remedies
Strength








Question 4

Find the gradient of xy2 + x2y = 4xy at the point (1, 3).

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Observation


This question was also reported to be attempted by majority of the candidates and they performed well in it. Majority of the candidates who attempted this question were reported to have differentiated xy2 +x2y = 4xy implicitly to obtain   + y2 + x2 + 2xy = 4.  Simplifying and bringing like terms together gave = .  The required gradient at the point (1,3) was obtained by substituting 1 for x and 3 for y in the equation and simplifying.  This gave  =   = - 1.


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