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Abhingya Patra Grade: 11
        

The trajectory of a particle moving in xy-plane is y=x3-3x2-4x+12. The particle crosses the x-axis :


a)Once


b) Twice


c) Three times


d) Four times

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear abhingya


y=x3-3x2-4x+12


f(x)= x3-3x2-4x+12


 


f(-2) =0


f(2) =0


f(3) =0


clearly it cut the x axis at three points


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Badiuddin




7 years ago
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