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If y=x^(3) and x increases at the rate o...

If `y=x^(3)` and x increases at the rate of 3 units per sec; then the rate at which the slope increases when x=3 is.

A

`y^(2)-18y+1=0`

B

`y^(2)+18y+1=0`

C

`y^(2)-18y-1=0`

D

`y^(2)+18y-1=0`

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