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Toronto Math Forum
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MAT334--2020S
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MAT334--Lectures & Home Assignments
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Chapter 2
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2.3 textbook
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Topic: 2.3 textbook (Read 3302 times)
Yan Zhou
Full Member
Posts: 15
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2.3 textbook
«
on:
February 09, 2020, 05:52:15 PM »
I am quite confused about the value of $2+sin\theta$. We know $sin\theta = \frac{1}{2i}(z - \frac{1}{z})$,
it says that $2 + sin\theta = 2 +(\frac{1}{2}i)(z-\frac{1}{z})$. Is that a typo?
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Victor Ivrii
Administrator
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Re: 2.3 textbook
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Reply #1 on:
February 09, 2020, 06:54:26 PM »
Yes, wrong sign in the middle (should be $\drac{1}{2i}=-\dfrac{i}{2}$) but the final result is correct
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Toronto Math Forum
»
MAT334--2020S
»
MAT334--Lectures & Home Assignments
»
Chapter 2
»
2.3 textbook