Question

함수 f(t)=e^{-2t}\cos(3t)u(t)에 대한 푸리에 변환 F(\omega)로 알맞은 것은??

Accepted Answer

\displaystyle F(\omega)=\dfrac{j\omega+2}{(j\omega+2)^{2}+9}

Answer

\displaystyle F(\omega)=\dfrac{3}{(j\omega+2)^{2}+9}

Answer

\displaystyle F(\omega)=\dfrac{j\omega}{(j\omega+2)^{2}+9}

Answer

\displaystyle F(\omega)=\dfrac{2}{(j\omega+2)^{2}+3}

Answer

\displaystyle F(\omega)=\dfrac{j\omega+3}{(j\omega+3)^{2}+4}