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