જો $\int \cos ^k(x) \sin (x) d x = \frac{-1}{4} \cos ^4(x) + C$ હોય,તો $k$ ની કિંમત શોધો.

  • A
    $4$
  • B
    $3$
  • C
    $2$
  • D
    $1$

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$\int \cos \sqrt{x} \, dx =$ (જ્યાં $C$ એ સંકલનનો અચળાંક છે.)

$\int \frac{\sqrt{\tan x}}{\sin x \cdot \cos x} \,d x=$

વિધેયનું સંકલન કરો: $\frac{1}{x \sqrt{ax - x^{2}}} \quad \left[ \text{સૂચના: } x = \frac{a}{t} \right]$

$\int \frac{x}{\sqrt{x+4}} \, dx = $ . . . . . . $+ C, x > -4$.

$\int \frac{5^{x}}{\sqrt{5^{-2x}-5^{2x}}} dx=$

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