y=x^(3)+2x^(2)+7x+8 then (dy)/(dx) will ...

`y=x^(3)+2x^(2)+7x+8` then `(dy)/(dx)` will be-

A

`3x^(2)+2x+15`

B

`3x^(2)+4x+7`

C

`x^(3)+2x^(2)+15`

D

`x^(3)+4x+7`

Text Solution

Verified by Experts

The correct Answer is:

B

`y=x^(3)+2x^(2)+7x+8`
`(dy)/(dx)=3x^(2)+4x+7`

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y=x^(3)+2x^(2)+7x+8 then (dy)/(dx) will be-
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