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 March 2nd, 2014, 02:43 AM #1 Newbie   Joined: Mar 2014 Posts: 2 Thanks: 0 Real part of complex? Hello! Can someone help with this complex function? f(x) =(e^3+i2x)/ix how can I get the real part of the f(x)? thanks a lot
 March 2nd, 2014, 06:23 AM #2 Senior Member   Joined: May 2011 Posts: 501 Thanks: 6 Re: Real part of complex? It's in front of you. Just divide by ix.
 March 2nd, 2014, 11:16 AM #3 Newbie   Joined: Mar 2014 Posts: 2 Thanks: 0 Re: Real part of complex? the function should be f(x) =(e^(3+i2x))/ix typo. can you solve it? thanks.
March 2nd, 2014, 01:46 PM   #4
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Re: Real part of complex?

Quote:
 Originally Posted by archer18 the function should be f(x) =(e^(3+i2x))/ix typo. can you solve it? thanks.
Assuming x is real:

f(x) =(e^(3+i2x))/ix = -ie^3(cos2x + isin2x)/x = e^3(sin2x/x) -ie^3(cos2x/x)

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