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    Finding the angle without a calculator (CA)

    It could have been a typo. I spoke with a few upperclassman who have taken the course and they recommended to leave it implicitly. I guess tan^-1(3) will have to do. I'm going to speak with the professor before the exam. Thanks for confirming the memorization issue.
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    Finding the angle without a calculator (CA)

    Homework Statement In my math class, we are not permitted to use a calculator. I am currently reviewing for a test and came across a small problem. Perform the following operation using the Euler (polar) form for the complex numbers involved. (1-3i)/i Homework Equations The...
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    Mental math question

    Thank you for all of the responses. They have provided insight, and I'm thinking differently about these approximations now. I'm assuming you're talking about the problem : (.9997)^.5 Hmm, I'm not seeing how a taylor expansion will help. The taylor expansion for the form (1+x)^n is(I...
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    Mental math question

    Homework Statement I am currently taking a mathematical methods in physics course. We were given a prerequisite inventory on the first day of class. There are 4 problems that we are assumed to be able to do in our head to 4 or 5 digit accuracy. I am not sure of how to compute these...
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