Struggling with Calc2 Problems? Join the Discussion!

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I find these problems difficult anybody want to help me out?
 

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What have you tried? You can't solve math problems by just staring at the problem- you have to try things and, if they don't work, try other things.
 
i'm sorry if it sounds like i want you to solve it for me but it's not true! My intention is to create a discussion about some of these so that I can get started because I'm stuck on most of them. I will post up what I've tried later today. thanks
 

Thread 'Finding the nth roots of a complex number'

There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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