Edexcel IALMathematicsGeneral Applications4 Marks
A curve has equation y = x^2(x - 2) + 3. (b) Find the exact coordinates of the stationary points of the curve.
- (b)Find the exact coordinates of the stationary points of the curve.[4]
Mark scheme
Marking points from the official mark scheme. The mark or mark type is shown in brackets.
- M1 for setting their dy/dx = 0 and attempting to solve for x.
- A1 for x = 0 and x = 4/3.
- M1 for substituting both found x values into the original equation for y to find the corresponding y-coordinates.
- A1 for (0, 3) and (4/3, 59/27) or (4/3, 2 5/27). (Both pairs of coordinates required, exact values).
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