इन समक़लानो का मान ज्ञात कीजिएः
`int_(1)^(2)(4x^(3)-5x^(2)+6x+9)dx`

Explanation

`underset(1)overset(1)int (4x^(3)-5x^(2)+6x+9)dx`
`=[x^(4)-(5x^3)/(3)+3x^(2)+9x]_(1)^(2)`
`=[(2)^(4)-(5)/(3)(2)^(3)+3(2)^(2)+9xx2]-[(1)^(4)-5/3(1)^(3)+3(1)^(2)+9xx1]`
`=[16-(40)/(3)+12+18]-[1-(5)/(3)+3+9]`
`=(46-(40)/(3))-(13-5/3)`
`=(98)/(3)-(34)/(3)=(64)/(3)`