p306

in my textbook it writes:

given:

where does the go?

i don't understand why it shouldn't be

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- May 22nd 2008, 08:28 AMafeasfaerw23231233complex no. again
p306

in my textbook it writes:

given:

where does the go?

i don't understand why it shouldn't be - May 22nd 2008, 08:30 AMcolby2152
- May 22nd 2008, 08:34 AMbobak
- May 22nd 2008, 11:33 AMafeasfaerw23231233
no. it doesn't have a constraint. it's an example in my textbook:

e.g.3

Find the fourth roots of 1+i

solution:

let

yakyakyak.... ,etc - May 22nd 2008, 04:01 PMmr fantastic
The book is wrong.

It should say:

where n is an integer.

When n = 0 you get*one*of the real fourth roots. This is the one given in the book.

There is obviously another real fourth root, as you rightly point out. It's given by n = 2.

Then there are two other fourth roots, both non-real, given by n = -1 and n = 1. These are the ones that bobak makes mention of.

Four fourth roots in total, as expected.

Other values of n just give you the same four roots again.