1.

`int_(0)^(1) (3x^(2)+2x+k)dx=0` तब k का मान ज्ञात कीजिएः।

Answer» `underset(0)overset(1)int (3x^(2)+2x+k)dx=0`
`rArr [x^(3)+x^(2)+kx]_(0)^(1)=0`
`rArr 1+1+k-0=0`
`rArr k=-2`


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