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If y ax^(2)+n2 and d^(2)//dx^(2)=4 amd d...

If `y ax^(2)+n2` and `d^(2)//dx^(2)=4` amd `dy/dx=4` at x=1 then values of a and b are:

A

`a=2,b=0`

B

`a=0,b=2`

C

`a=1,b=0`

D

`a=0,b=1`

Text Solution

Verified by Experts

`y=ax^(2)bx+2`
`(dy)/(dx)=2ax+b`
`((dy)/(dx))_(s=1)=2a+b=4`
`(d^(2)y)/(dx)=2a-4 rArr a=2,b=0`
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