x^(1/2 -3) equals x^-5/2. How? I don't see how 1/2 times -3 equals -5/2. Reciprocals? Help.
2006-09-23 14:42:34 · 7 answers · asked by vintagex50s 2 in Science & Mathematics ➔ Mathematics
1/2 _minus_ 3 equals -5/2
2006-09-23 14:46:09 · answer #1 · answered by Mehoo 3 · 1⤊ 0⤋
uhmm, it's actually like this.
since that is a one-to-one fuction, we can say that (1/2-3)=-5/2
if you subtract 3 from 1/2, (you can convert 3 into 6/2, since 6/2 is just equals to 3) you would get the equation (1/2 - 6/2)
since they have the same denominator, we can copy the denominator and simply do 1 minus 6 for the numerator.
the result will equal to -5/2
hope you got it..=)
2006-09-23 21:53:39 · answer #2 · answered by loRi^^, 2 · 0⤊ 0⤋
x^((1/2) - 3) = x^((1/2) - (6/2)) = x^(-5/2)
you have to multiply everything by 2, and you get the fractions (1/2) and (6/2)
your not multipling, your dividing.
this problem in math form, would be (x^(1/2))/(x^3)
2006-09-23 22:17:50 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋
let x^(1/2-3) =a,
1/2-3 = logabasex
let b=x^(-5/2)
-5/2 = logb basex,
by the theory of exponents, a^n = a^s,
n = s
2006-09-23 22:55:35 · answer #4 · answered by free aung san su kyi forthwith 2 · 0⤊ 0⤋
1/2 - 3 = 1/2 - 6/2 = -5/2.
Thusly, x^(1/2 - 3) = x^(-5/2)
2006-09-23 22:00:52 · answer #5 · answered by whatthe 3 · 0⤊ 0⤋
1/2-3
1/2-6/2
-5/2
ta-da!!
2006-09-23 21:49:48 · answer #6 · answered by daeylcq 2 · 1⤊ 0⤋
where did you get that answer, dont think thats right
2006-09-23 21:46:55 · answer #7 · answered by sur2124 4 · 0⤊ 0⤋