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2007-07-05 10:24:02 · 9 answers · asked by L D 1 in Science & Mathematics Mathematics

9 answers

i

i^1 = i
i^2 = -1
i^3 = -i
i^4 = 1

So, i^49 is i^48 (which is i^4 multiplied by itself 12 times) times i.

So i^49 = i.

2007-07-05 10:27:40 · answer #1 · answered by Justin L 4 · 2 0

i^48 = 1

so i^49 = i

2007-07-05 17:28:26 · answer #2 · answered by spirit dummy 5 · 0 0

i is the square root of -1, so i^2 = -1 and thus i^4 = 1.
i^49 = i * i^48 = i
since i^48 = 1^12 = 1.

2007-07-05 17:28:18 · answer #3 · answered by MathProf 4 · 1 0

You know that:

i^1 = i
i^2 = -1
i^3 = -i
i^4 = 1
and it continues in that pattern, so i^5=i, i^6=-1, etc

Now, i^49 can be written as (i^48)*(i^1)
Since 48 is a multiple of 4, i^48 = 1,
so (i^48)*(i^1) = 1*(i^1) = i

i^49 = i

2007-07-05 17:31:46 · answer #4 · answered by nona 3 · 1 0

i^49 = i^48*i = i

2007-07-05 17:27:58 · answer #5 · answered by ironduke8159 7 · 1 0

i^49 = i

2007-07-05 17:28:33 · answer #6 · answered by oregfiu 7 · 0 0

First, express 49 as 2(24) + 1

i^49 =

i^(2(24) + 1))

Use exponential properties to separate and solve.

i * i^(2(24))

i * (i^2)^24

But we know i^2 = -1, so we get

i * (-1)^24

And we know (-1) to an even power is +1, so we have

i * (1)

or simply

i

2007-07-05 17:28:08 · answer #7 · answered by Puggy 7 · 1 1

i = sqrt(-1)
i^2 = -1.
i^48 = -1^24
-1^24 = 1
i^49 = 1i

2007-07-05 17:28:42 · answer #8 · answered by TadaceAce 3 · 0 0

Its a constant, there is no solving to be done.

2007-07-05 17:27:56 · answer #9 · answered by sd d 3 · 0 6

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