જો $\frac{d}{d x}\left(\frac{x^2}{(x+2)(2 x+3)}\right)=\frac{A}{(x+2)^2}+\frac{B}{(2 x+3)^2}$ હોય,તો $A+B=$

  • A
    $1 / 2$
  • B
    $-5$
  • C
    $-3 / 2$
  • D
    $9 / 4$

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$\int \frac{3x-2}{(x+1)(x-2)^2} dx = $ (જ્યાં $C$ એ સંકલનનો અચળાંક છે.)

જો $\int \frac{2 x^2}{\left(2 x^2+\alpha\right)\left(x^2+5\right)} d x=\frac{\sqrt{5}}{3} \tan ^{-1} \frac{x}{\sqrt{5}}-\frac{\sqrt{2}}{3} \tan ^{-1} \frac{x}{\sqrt{2}}+c$ હોય, તો $\alpha=$

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