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Question Number 159664 by mnjuly1970 last updated on 19/Nov/21

        prove  that :                 Φ = ∫_0 ^( ∞) (( sin^( 4) (x))/x^( 3) )dx=  ln(2)     −−−−−−−−−

$$ \\ $$$$\:\:\:\:\:\:{prove}\:\:{that}\:: \\ $$$$\:\:\:\:\: \\ $$$$\:\:\:\:\:\:\:\:\Phi\:=\:\int_{\mathrm{0}} ^{\:\infty} \frac{\:{sin}^{\:\mathrm{4}} \left({x}\right)}{{x}^{\:\mathrm{3}} }{dx}=\:\:{ln}\left(\mathrm{2}\right) \\ $$$$\:\:\:−−−−−−−−− \\ $$$$ \\ $$

Commented by chengulapetrom last updated on 19/Nov/21

Commented by chengulapetrom last updated on 19/Nov/21

question no2

$${question}\:{no}\mathrm{2} \\ $$

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