A curve with equation , y=ax4+bx3+cx2+d , has zero gradient at point 0,1 and also touches the x−axis at point −1,0.Then value of x for which the curve has a negative gradient are given by;ans is for x<−1plzz explain
Ranjita yadav , 11 Years ago
Grade 11
1 Answer
Jitender Singh
Last Activity: 10 Years ago
Ans:
There are three roots of y’ = 0 Two roots are given: x =0, -1
Let x1be the 3rdroot of y’ = 0
a’ > 0 By wavy curve method, we have x1> 0
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