Solving Euler's Formula: 2^(1-i) Explained

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The discussion centers on the mathematical expansion of 2^(1-i) into the form 2cos(ln2) - 2i(sin(ln2). Participants suggest starting with the exponential form, using the property exp(ln[a^b]) = a^b. The key steps involve applying Euler's formula, which connects complex exponentials to trigonometric functions. Understanding the natural logarithm of 2 and its implications in the expansion is crucial. The conversation emphasizes the importance of these mathematical principles in solving the equation.
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Hey guys, I'm having trouble on understanding how:

2^(1-i) expands to 2cos(ln2)-2i(sin(ln2))

Thanks in advance!
 
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btbam91 said:
Hey guys, I'm having trouble on understanding how:

2^(1-i) expands to 2cos(ln2)-2i(sin(ln2))

Thanks in advance!

2^(1-i) = exp(ln[2^(1-i)]), go from there.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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