I have my MTH 112 final today and I can do all the hard things but the simple things ,like the question I am asking now, I cannot remember what my instructor said!!!!
2007-04-30 20:11:27 · 5 answers · asked by bleubutterfly 1 in Science & Mathematics ➔ Mathematics
f(-3) = 5^(-3) = 1/5^3 = 1/125
Because the rule for negative exponents is: x^(-y) = 1/(x^y)
2007-04-30 20:14:42 · answer #1 · answered by ZeroCarbonImpact 3 · 0⤊ 0⤋
f(x) = 5^-3
f(-3) = 1/ 5^3
= 1/ 125
2007-04-30 20:15:57 · answer #2 · answered by Mehn 3 · 0⤊ 0⤋
5 ^ (-3) = 1/125
2007-04-30 20:21:34 · answer #3 · answered by michael_scoffield 3 · 0⤊ 0⤋
I just don't get what you meant...
I assume this:
f(x)=5, asked x=-3
the function f, f(x) = a^x
f(5) = a^(-3)
what is a?
then a = (-3)^â5
2007-04-30 20:22:36 · answer #4 · answered by Anonymous · 0⤊ 0⤋
f(x)=5^x
f(-3)=5^(-3)
=1/(5^3)
=1/125
2007-04-30 20:38:34 · answer #5 · answered by iyiogrenci 6 · 0⤊ 0⤋