f(x) = 12x3 – 15x2 + 64 এর প্রতি-অন্তরকলজ নির্ণয় করুন।

  1. \(12{x^3} - 5{x^2} + 64 + C\)
  2. \(36{x^2} - 30x\; + \;C\)
  3. \(12{x^4} - 15{x^3} + 64x + C\)
  4. \(3{x^4} - 5{x^3} + 64x + C\)

Answer (Detailed Solution Below)

Option 4 : \(3{x^4} - 5{x^3} + 64x + C\)
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Detailed Solution

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প্রদত্ত, f(x) = 12x 3 – 15x 2 + 64

f(x) এর প্রতি-অন্তরকলজ হল F(x) + C, যেখানে C হল ধ্রুবক।

\(F\left( x \right) = \smallint 12{{\rm{x}}^3}{\rm{}}-{\rm{}}15{{\rm{x}}^2}{\rm{}} + {\rm{}}64dx = \frac{{12{x^4}}}{4} - \frac{{15{x^3}}}{3}+ 64x + C = 3{x^4} - 5{x^3} + 64x + C\)

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