Express in the form a + bi, where a and b are real (a) sin(3pi/2 - i) (b) cosh(1 + i) have tried using addition formula on (a) but its not right.
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Originally Posted by ardam Express in the form a + bi, where a and b are real (a) sin(3pi/2 - i) (b) cosh(1 + i) have tried using addition formula on (a) but its not right. Note that for , Thus, Does this make sense? Try part (b). Note that if , then .
Originally Posted by Chris L T521 Note that for , Thus, Does this make sense? Try part (b). Note that if , then . cheers for that. right so cosh(z) well sub 1 + i in then can you take e outside bracket or treat e^1+i as e^i.e?
Last edited by ardam; Jan 28th 2009 at 04:10 PM.
anyone please?
Originally Posted by ardam anyone please? Why don't you know anything about elementry functions? LIKE: These are standard and easy to derive.
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