Question

Question concerning exponential forms :

Answer 1

\[e ^{j2.5\pi + 2} = je ^{2}\]

Answer 2

I read over the chapter and wasnt able to find any information why this statement is true

Answer 3

I dont understand why it can be re written as je^2

Answer 4

is it integration?

Answer 5

well , it is . here is the original problem
.. one minute please

Answer 6

impulse function problem

Answer 7

\(\Large e^{j2.5\pi }\times e^2 = (\sin 2.5\pi + j\cos 2.5\pi )e^2 = je^2\)
doubts?

Answer 8

typo... \[\cos\theta + i \sin \theta = e^{i\theta}\]

Answer 9

sin(2.5 π) = sin (0.5 π)
cos(5/2 π) = cos(π/2)

Answer 10

\[e^{ j n π } = e^{ j (n±2) π }\]

Answer 11

thanks for pointing it out! @Redcan
\(\Large e^{j2.5\pi }\times e^2 = (\cos 2.5\pi + j\sin 2.5\pi )e^2 \\ \Large = (\cos \pi/2 + j\sin \pi/2 )e^2= je^2\)

Answer 12

@hartnn Wonderful ! Makes sense now.

Answer 13

Thanks everyone !