2007-09-03 11:25:56 · 9 answers · asked by EJC-7483 2 in Science & Mathematics ➔ Mathematics
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2007-09-03 11:28:34 · answer #1 · answered by Vincent G 7 · 2⤊ 0⤋
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2007-09-03 11:28:29 · answer #2 · answered by ironduke8159 7 · 2⤊ 0⤋
Reciprocal just means: 1 divided by the number you want the reciprocal of. Thus: reciprocal of 2 is 1/2, reciprocal of 3 is 1/3 ... reciprocal of x is 1/x.
You can work this out using the formula for reciprocal: 1/x
you get:
x = 1/x
multiply both sides with x, you get: x^2 = 1
written differently this gives: x^2 - 1 = 0, which you can rewrite as
(x+1)*(x-1) = 0
possible answers are thus +1 or -1.
Since the question was "what positive number", answer is obviously +1.
2007-09-03 11:36:06 · answer #3 · answered by Anonymous · 0⤊ 0⤋
1. Reciprocal just means that you make the number you have a denominator of 1, and 1/1=1
2007-09-03 11:30:07 · answer #4 · answered by Paul 1 · 1⤊ 0⤋
we have x = 1/x or x^2 =1 which gives x as +/_ 1.
as the question requires a positive number, the answer is +1.
2007-09-03 11:30:17 · answer #5 · answered by Steve T 5 · 1⤊ 0⤋
1 or anything equaling 1 like sin 90, cos 0 or any number raised to a 0 power or log 10 or ln (e) or any fraction with similar numertor & denominator 7/7, 451/451 etc......
2007-09-03 11:35:27 · answer #6 · answered by 037 G 6 · 0⤊ 0⤋
that would be 1 because it =1/1
2007-09-03 11:32:21 · answer #7 · answered by Mr. Smith 5 · 0⤊ 0⤋
Let's solve: x = 1/x
x² = 1
Since x is positive,
x = 1.
2007-09-03 11:36:24 · answer #8 · answered by steiner1745 7 · 0⤊ 0⤋
Hi. 17^0, among others.
2007-09-03 11:31:08 · answer #9 · answered by Cirric 7 · 1⤊ 1⤋