• anonymous
Confirmation and help: A curve has the equation: y= x^3 +3x^2 -9x + k, where k is a constant (i) write down an expression for dy/dx My solution: dy/dx= 3x^2 + 6x - 9 Is it correct? (ii) Find the x-coordinates of the two stationary points on the curve. My solution x=1 or x=-3 Is it correct? (iii) Hence find the two values for K for which the curve has a stationary point on the x-axis. Help please.
Mathematics
• Stacey Warren - Expert brainly.com
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SOLVED
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