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A curve has equation y=x^3+ax+b, where a and b are constants. The gradient of the curve at the point (2,7) is 3. Find the value of a and b?

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  • A curve has equation y=x^3+ax+b, where a and b are constants. The gradient of the curve at the point (2,7) is 3. Find the value of a and b?


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The curve C has equation y = x3 – 2x2 ... (3) The point B has coordinates (–2, 7). (b) ... and has gradient 3 1 . (a) Find an equation for l1 in the ...
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Positive: 55 %
... Show that the value of dy dx at P is 3. [5] (b) Find an ... The curve C has equation y = x3 2x ... where m and c are constants. [4] Another point B ...
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Positive: 52 %

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