Stuck in question 1 November 2009 p1 mathematics(9709)

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I am able to understand the concept but the simplification is hard. Please help me tomorrow is my paper.
 
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sweet and simple..
1)integrate dy/dx
2)use co-ordinates to find y-intercept (that is c)
3)construct the final equation
 
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1)If u wanna integrate
3(x)-1/2 - x
3(x)1/2 / 1/2 - x2/2 = 6(x)^1/2 - x^2 / 2 => y = 6(x)^1/2 - x^2 / 2 + c 2) input x and y calculate c and form equation ...
 
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